{"title":"Circuit Tester","description":"","products":[{"product_id":"obdmonster-ps100-pro-automotive-circuit-tester-12v-24v-power-probe","title":"OBDMonster PS100 Pro Automotive Circuit Tester | 12V 24V Power Probe","description":"\u003csection class=\"obdm-ps100pro-product\"\u003e\n \u003cstyle\u003e\n .obdm-ps100pro-product {\n max-width: 1180px;\n margin: 0 auto;\n padding: 36px 18px;\n font-family: Arial, Helvetica, sans-serif;\n color: #1f1f1f;\n line-height: 1.7;\n background: #ffffff;\n }\n\n .obdm-ps100pro-product * {\n box-sizing: border-box;\n }\n\n .obdm-ps100pro-product img {\n width: 100%;\n height: auto;\n display: block;\n border-radius: 16px;\n margin: 28px 0 34px;\n box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);\n }\n\n .obdm-ps100pro-hero {\n background: linear-gradient(135deg, #050505 0%, #151515 58%, #300000 100%);\n color: #ffffff;\n padding: 42px 34px;\n border-radius: 18px;\n margin-bottom: 34px;\n position: relative;\n overflow: hidden;\n }\n\n 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.obdm-ps100pro-cta {\n margin-top: 46px;\n padding: 36px;\n border-radius: 18px;\n background: linear-gradient(135deg, #111111 0%, #1a1a1a 60%, #330000 100%);\n color: #ffffff;\n text-align: center;\n }\n\n .obdm-ps100pro-cta h2 {\n color: #ffffff;\n margin-top: 0;\n }\n\n .obdm-ps100pro-cta p {\n color: #eeeeee;\n max-width: 850px;\n margin: 0 auto;\n }\n\n @media (max-width: 900px) {\n .obdm-ps100pro-grid,\n .obdm-ps100pro-feature-row {\n grid-template-columns: 1fr;\n }\n\n .obdm-ps100pro-hero h1 {\n font-size: 34px;\n }\n }\n\n @media (max-width: 600px) {\n .obdm-ps100pro-product {\n padding: 26px 14px;\n }\n\n .obdm-ps100pro-hero {\n padding: 34px 22px;\n }\n\n .obdm-ps100pro-hero h1 {\n font-size: 29px;\n }\n\n .obdm-ps100pro-hero p {\n font-size: 16px;\n }\n\n .obdm-ps100pro-product h2 {\n font-size: 25px;\n }\n }\n \u003c\/style\u003e\n\n \u003cdiv class=\"obdm-ps100pro-hero\"\u003e\n \u003cdiv class=\"obdm-ps100pro-label\"\u003eOBDMonster Diagnostics \u0026amp; Tools\u003c\/div\u003e\n \u003ch1\u003eOBDMonster PS100 Pro \u003cspan\u003eAutomotive Circuit Tester\u003c\/span\u003e\n\u003c\/h1\u003e\n \u003cp\u003e\n A professional automotive power circuit probe designed for 12V \/ 24V electrical diagnostics, polarity identification,\n continuity testing, resistance testing, diode testing, frequency testing, component activation, and fast circuit troubleshooting.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cp class=\"obdm-ps100pro-intro\"\u003e\n The \u003cstrong\u003eOBDMonster PS100 Pro Automotive Circuit Tester\u003c\/strong\u003e is built for technicians, mobile mechanics,\n automotive electricians, fleet maintenance teams, and serious DIY users who need a faster and more reliable way\n to diagnose vehicle electrical problems. It combines multiple electrical diagnostic functions into one compact\n professional tool, helping users test power, ground, resistance, continuity, frequency, diode condition, and circuit integrity.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Automotive electrical faults are often difficult to locate. A blown fuse, dead light, intermittent accessory failure,\n weak ground, damaged wire, bad relay, or short circuit can waste hours of diagnostic time. The PS100 Pro helps users\n move from guessing to confirmed testing by showing clear electrical data directly at the circuit.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-ps100pro-highlight\"\u003e\n \u003cp\u003e\n \u003cstrong\u003eCore Advantage:\u003c\/strong\u003e The PS100 Pro features six work modes, 180° screen rotation, quick polarity identification,\n continuity buzzer testing, resistance measurement, voltage and signal testing, frequency testing, component activation,\n and a 40FT cable setup for working around cars, trucks, trailers, RVs, and commercial vehicles.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/95c13aa2-6c0c-4310-91c0-6803bd36acb1.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster PS100 Pro six work modes voltage current resistance diode continuity and frequency testing automotive circuit tester\"\u003e\n\n \u003ch2\u003eSix Work Modes for Complete Electrical Diagnostics\u003c\/h2\u003e\n\n \u003cp\u003e\n The OBDMonster PS100 Pro is designed with \u003cstrong\u003esix work modes\u003c\/strong\u003e to cover the most common automotive\n electrical diagnostic tasks. Instead of switching between multiple tools, users can perform voltage testing,\n signal testing, resistance testing, diode testing, continuity testing, and frequency testing with one circuit probe.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-ps100pro-grid\"\u003e\n \u003cdiv class=\"obdm-ps100pro-card\"\u003e\n \u003ch3\u003eVoltage \u0026amp; Polarity Test\u003c\/h3\u003e\n \u003cp\u003e\n Quickly identify positive, negative, and open circuits while checking real-time circuit voltage.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-card\"\u003e\n \u003ch3\u003eContinuity \u0026amp; Resistance\u003c\/h3\u003e\n \u003cp\u003e\n Check wire integrity, connector condition, switch operation, resistance values, and circuit continuity.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-card\"\u003e\n \u003ch3\u003eSignal \u0026amp; Frequency Test\u003c\/h3\u003e\n \u003cp\u003e\n View max voltage, min voltage, frequency, duty cycle, and signal timing data for advanced diagnostics.\n \u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eQuick Self-Test and Polarity Identification\u003c\/h2\u003e\n\n \u003cp\u003e\n Correctly identifying circuit polarity is one of the first steps in automotive electrical troubleshooting.\n The PS100 Pro helps users quickly identify whether a test point is positive, negative, or open. This is useful\n when checking fuses, switches, connectors, sensors, lights, motors, relays, and power supply circuits.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The color-based display makes testing easier to understand: a red indication helps identify positive voltage,\n while a green indication helps identify negative or ground condition. This gives technicians faster feedback\n when diagnosing power supply and ground faults.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/ad503871-7236-462b-ac33-fddea917f8df.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster PS100 Pro quick self test and polarity identification positive negative automotive circuit tester\"\u003e\n\n \u003ch2\u003eContinuity Testing with Buzzer Feedback\u003c\/h2\u003e\n\n \u003cp\u003e\n Continuity testing helps confirm whether a wire, switch, connector, fuse, relay path, or circuit section is complete.\n The PS100 Pro provides fast continuity diagnostics with buzzer feedback, making it easier to verify circuit integrity\n without constantly watching the screen.\n \u003c\/p\u003e\n\n \u003cp\u003e\n When resistance is low, the tester can indicate good conductivity with an audible buzzer. When resistance is too high\n or the circuit is open, the buzzer will not sound. This makes it practical for quickly checking wiring harnesses,\n terminals, grounds, switches, and connectors.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-ps100pro-note\"\u003e\n \u003cstrong\u003eContinuity Reference:\u003c\/strong\u003e For continuity testing, a low resistance value indicates good conductivity.\n If the circuit is open or resistance is too high, the buzzer will not sound. Test results may vary depending on\n contact quality, circuit condition, and testing method.\n \u003c\/div\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/e208c62f-91c8-4925-a621-2def09ff6f00.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster PS100 Pro continuity testing automotive circuit tester with buzzer for wiring and connector diagnostics\"\u003e\n\n \u003ch2\u003eVoltage and Signal Testing for Advanced Diagnosis\u003c\/h2\u003e\n\n \u003cp\u003e\n The PS100 Pro can help users view electrical signal behavior, including maximum voltage, minimum voltage, frequency,\n and duty cycle information. This is useful when checking pulsed circuits, control signals, sensor-related wiring,\n and electrical components that do not simply stay on or off.\n \u003c\/p\u003e\n\n \u003cp\u003e\n For technicians dealing with intermittent faults, voltage drops, unstable signals, or abnormal circuit behavior,\n the ability to observe signal-related data helps improve diagnostic accuracy and reduce unnecessary part replacement.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/755d5d5e-0c5b-4ab1-ac09-40c1d836524b.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster PS100 Pro current and signal testing with max voltage min voltage frequency and duty cycle automotive electrical diagnostic tool\"\u003e\n\n \u003ch2\u003eResistance Testing for Circuit and Component Inspection\u003c\/h2\u003e\n\n \u003cp\u003e\n Resistance testing helps users evaluate wires, switches, components, and circuit paths. The PS100 Pro can be used\n to check resistance values and identify possible high-resistance faults, poor connections, damaged wires, or faulty\n electrical components.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This function is especially useful when diagnosing wiring harness problems, corroded connectors, switch failures,\n motor circuits, sensor circuits, and circuit paths that appear connected but do not perform correctly under load.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-ps100pro-note\"\u003e\n \u003cstrong\u003eImportant Safety Note:\u003c\/strong\u003e Always turn off power to the test circuit before performing resistance testing.\n Resistance testing should not be performed on a live powered circuit.\n \u003c\/div\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/304e633c-8a1c-465f-8158-3a610741d6f6.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster PS100 Pro resistance testing automotive wiring component and circuit diagnostics\"\u003e\n\n \u003ch2\u003eFrequency Testing with 180° Screen Rotation\u003c\/h2\u003e\n\n \u003cp\u003e\n The PS100 Pro supports frequency testing for signal-related diagnostics. It can help users check maximum voltage,\n minimum voltage, frequency, and signal timing data. This is useful for circuits that operate with pulses or\n changing signal patterns.\n \u003c\/p\u003e\n\n \u003cp\u003e\n One of the most practical design upgrades is the \u003cstrong\u003e180° screen rotation function\u003c\/strong\u003e. Automotive testing\n often happens under dashboards, inside door panels, near fuse boxes, around engine bays, or behind components.\n The rotating display allows users to read the screen more easily from different working angles, reducing awkward\n hand positioning and improving efficiency.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/e96be74e-b94f-42e2-b4d9-93321ba20dd9.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster PS100 Pro frequency testing with 180 degree screen rotation for automotive signal diagnostics\"\u003e\n\n \u003ch2\u003eComponent Activation and Power Probe Testing\u003c\/h2\u003e\n\n \u003cp\u003e\n The OBDMonster PS100 Pro can be used as a power circuit probe to activate supported automotive electrical components.\n By applying power or ground through the probe tip, technicians can test whether a component responds correctly\n before replacing parts or tracing deeper into the wiring harness.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This function is useful for checking many supported loads such as lights, relays, motors, solenoids, fans, pumps,\n horns, and other electrical accessories. It helps determine whether the issue is caused by the component itself,\n the wiring, the fuse, the relay, the ground, or the control signal.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-ps100pro-dark-box\"\u003e\n \u003ch2\u003eCommon Components You Can Test\u003c\/h2\u003e\n \u003cul class=\"obdm-ps100pro-list\"\u003e\n \u003cli\u003e\n\u003cstrong\u003eLights:\u003c\/strong\u003e Headlights, brake lights, turn signals, reverse lights, trailer lights, and marker lights.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRelays:\u003c\/strong\u003e Activate supported relays and verify circuit response.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMotors:\u003c\/strong\u003e Test window motors, washer pumps, blower motors, and other supported 12V \/ 24V loads.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSolenoids:\u003c\/strong\u003e Check supported solenoid activation in automotive systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAccessories:\u003c\/strong\u003e Diagnose electrical accessories, add-on devices, and aftermarket circuits.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003e40FT Cable for Cars, Trucks, RVs, and Trailers\u003c\/h2\u003e\n\n \u003cp\u003e\n The PS100 Pro is equipped with a long cable setup designed for real repair environments. With a 20FT main cable\n and 20FT extension cable, users get up to \u003cstrong\u003e40FT total working reach\u003c\/strong\u003e. This makes it easier to test\n circuits at the front, rear, interior, engine bay, trailer connection, or cargo area without constantly moving\n the power source.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The long cable is especially useful for larger vehicles such as pickup trucks, commercial vehicles, RVs, vans,\n trailers, and fleet service applications.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/52e272df-d9a5-4b0b-9ba9-2c0e753523e1.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster PS100 Pro automotive circuit tester with 40FT cable 20FT main cable and 20FT extension cable for truck RV trailer diagnostics\"\u003e\n\n \u003ch2\u003eBuilt for Common Automotive Electrical Problems\u003c\/h2\u003e\n\n \u003cp\u003e\n The PS100 Pro is designed for the electrical issues technicians face every day. It helps users confirm whether\n a circuit has power, ground, signal, continuity, resistance, diode function, or frequency output before replacing\n parts or disassembling more components.\n \u003c\/p\u003e\n\n \u003cul class=\"obdm-ps100pro-list\"\u003e\n \u003cli\u003e\n\u003cstrong\u003eNo-start electrical diagnosis:\u003c\/strong\u003e Check power supply, ground condition, fuses, relays, and starter-related circuits.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBlown fuse troubleshooting:\u003c\/strong\u003e Help identify short circuits or abnormal electrical paths.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLighting repair:\u003c\/strong\u003e Test headlights, brake lights, turn signals, reverse lights, and trailer wiring.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRelay and motor testing:\u003c\/strong\u003e Activate supported relays, motors, pumps, and solenoids directly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGround fault diagnosis:\u003c\/strong\u003e Locate poor ground connections and unstable electrical behavior.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWiring harness inspection:\u003c\/strong\u003e Check continuity, resistance, open circuits, and connector integrity.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSignal troubleshooting:\u003c\/strong\u003e Analyze frequency, duty cycle, max voltage, and min voltage on supported signal circuits.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eKey Features\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-ps100pro-feature-row\"\u003e\n \u003cdiv class=\"obdm-ps100pro-feature-box\"\u003e\n \u003ch3\u003eSix Work Modes\u003c\/h3\u003e\n \u003cp\u003e\n Supports voltage test, signal test, resistance test, diode test, continuity test, and frequency test for complete circuit diagnostics.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-feature-box\"\u003e\n \u003ch3\u003e180° Screen Rotation\u003c\/h3\u003e\n \u003cp\u003e\n Rotate the display orientation for better viewing when working under the dash, inside engine bays, or in tight spaces.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-feature-box\"\u003e\n \u003ch3\u003ePolarity Identification\u003c\/h3\u003e\n \u003cp\u003e\n Quickly identify positive and negative circuits with clear visual feedback to speed up power and ground testing.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-feature-box\"\u003e\n \u003ch3\u003eComponent Activation\u003c\/h3\u003e\n \u003cp\u003e\n Apply power or ground through the probe tip to activate supported lights, relays, motors, solenoids, and accessories.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-feature-box\"\u003e\n \u003ch3\u003eContinuity Buzzer\u003c\/h3\u003e\n \u003cp\u003e\n Quickly check wire integrity, switch condition, terminals, connectors, and ground paths with audible feedback.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-feature-box\"\u003e\n \u003ch3\u003e40FT Working Reach\u003c\/h3\u003e\n \u003cp\u003e\n Includes 20FT main cable and 20FT extension cable for easier testing around cars, trucks, trailers, RVs, and fleet vehicles.\n \u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-ps100pro-table-wrap\"\u003e\n \u003ctable class=\"obdm-ps100pro-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eProduct Name\u003c\/td\u003e\n \u003ctd\u003eOBDMonster PS100 Pro Automotive Circuit Tester\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTool Type\u003c\/td\u003e\n \u003ctd\u003ePower circuit probe, automotive electrical tester, component activation tool\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSystem Support\u003c\/td\u003e\n \u003ctd\u003eDesigned for 12V \/ 24V automotive electrical systems\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWork Modes\u003c\/td\u003e\n \u003ctd\u003eVoltage test, signal\/current test, resistance test, diode test, continuity test, frequency test\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eScreen Function\u003c\/td\u003e\n \u003ctd\u003e180° screen rotation for easier viewing from different working angles\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCable Length\u003c\/td\u003e\n \u003ctd\u003e40FT total reach: 20FT main cable plus 20FT extension cable\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMain Functions\u003c\/td\u003e\n \u003ctd\u003ePower testing, ground testing, polarity identification, continuity testing, resistance testing, diode testing, frequency testing, component activation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCommon Test Areas\u003c\/td\u003e\n \u003ctd\u003eFuses, relays, lights, motors, solenoids, switches, connectors, grounds, wiring harnesses, trailers, and accessories\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRecommended Users\u003c\/td\u003e\n \u003ctd\u003eProfessional technicians, automotive electricians, mobile mechanics, fleet maintenance teams, and advanced DIY users\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eWho Should Use the OBDMonster PS100 Pro?\u003c\/h2\u003e\n\n \u003cp\u003e\n The PS100 Pro is ideal for anyone who regularly works with automotive electrical circuits and needs fast,\n clear, and practical diagnostic feedback. It is especially useful for technicians who need to confirm circuit\n condition before replacing parts.\n \u003c\/p\u003e\n\n \u003cul class=\"obdm-ps100pro-list\"\u003e\n \u003cli\u003eProfessional auto repair shops\u003c\/li\u003e\n \u003cli\u003eAutomotive electrical diagnostic technicians\u003c\/li\u003e\n \u003cli\u003eMobile mechanics\u003c\/li\u003e\n \u003cli\u003eFleet maintenance teams\u003c\/li\u003e\n \u003cli\u003eRV and trailer service technicians\u003c\/li\u003e\n \u003cli\u003eMotorcycle and powersports repair users\u003c\/li\u003e\n \u003cli\u003eUsed car inspection professionals\u003c\/li\u003e\n \u003cli\u003eAdvanced DIY users and automotive enthusiasts\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"obdm-ps100pro-note\"\u003e\n \u003cstrong\u003eImportant Note:\u003c\/strong\u003e Always follow safe automotive electrical testing procedures. Component activation\n should be performed only on circuits and components designed for direct power or ground testing. Do not apply power\n to sensitive control modules, communication lines, sensors, or circuits unless the service procedure confirms it is safe.\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-faq\"\u003e\n \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the OBDMonster PS100 Pro used for?\u003c\/summary\u003e\n \u003cp\u003e\n The PS100 Pro is used for automotive electrical diagnostics, including power testing, ground testing,\n polarity identification, continuity testing, resistance testing, diode testing, frequency testing,\n short circuit troubleshooting, and component activation.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the six work modes?\u003c\/summary\u003e\n \u003cp\u003e\n The PS100 Pro supports voltage test, signal\/current test, resistance test, diode test, continuity test,\n and frequency test, giving users a complete workflow for automotive circuit diagnostics.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat does the 180° screen rotation do?\u003c\/summary\u003e\n \u003cp\u003e\n The 180° screen rotation allows users to change the display orientation, making the screen easier to read\n when testing under dashboards, inside engine bays, near fuse boxes, or in tight working areas.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan the PS100 Pro activate components?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The PS100 Pro can apply power or ground through the probe tip to activate supported electrical components\n such as lights, relays, motors, solenoids, fans, pumps, and accessories.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eHow long is the cable?\u003c\/summary\u003e\n \u003cp\u003e\n The PS100 Pro includes a 20FT main cable and a 20FT extension cable, providing up to 40FT total working reach\n for cars, trucks, RVs, trailers, and larger vehicles.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan it help find wiring faults?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The PS100 Pro helps diagnose open circuits, short circuits, poor grounds, high-resistance connections,\n continuity problems, signal faults, and electrical component issues.\n \u003c\/p\u003e\n \u003c\/details\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-ps100pro-cta\"\u003e\n \u003ch2\u003eOBDMonster PS100 Pro: Diagnose Automotive Circuits with Confidence\u003c\/h2\u003e\n \u003cp\u003e\n The OBDMonster PS100 Pro Automotive Circuit Tester combines six diagnostic work modes, component activation,\n polarity identification, continuity testing, resistance testing, signal and frequency analysis, 180° screen rotation,\n and a 40FT cable setup. It is a professional electrical diagnostic tool built to help technicians find faults faster,\n reduce guesswork, and repair vehicle electrical systems with greater confidence.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e","brand":"OBDMonster","offers":[{"title":"Default Title","offer_id":48182999417067,"sku":"CC0430","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/3641\/7003\/files\/cc0430.jpg?v=1777870172"},{"product_id":"obdmonster-v100-automotive-circuit-tester","title":"OBDMonster V100 Circuit Tester | 0–80V DC Automotive Power Probe","description":"\u003csection class=\"obdm-v100-product\"\u003e\n \u003cstyle\u003e\n .obdm-v100-product {\n max-width: 1180px;\n margin: 0 auto;\n padding: 36px 18px;\n font-family: Arial, Helvetica, sans-serif;\n color: #1f1f1f;\n line-height: 1.7;\n background: #ffffff;\n }\n\n .obdm-v100-product * {\n box-sizing: border-box;\n }\n\n .obdm-v100-product img {\n width: 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}\n }\n \u003c\/style\u003e\n\n \u003cdiv class=\"obdm-v100-hero\"\u003e\n \u003cdiv class=\"obdm-v100-label\"\u003eOBDMonster Diagnostics \u0026amp; Tools\u003c\/div\u003e\n \u003ch1\u003eOBDMonster V100 \u003cspan\u003eAutomotive Circuit Tester\u003c\/span\u003e\n\u003c\/h1\u003e\n \u003cp\u003e\n A multifunction 0–80V DC power circuit probe tester designed for automotive voltage testing, polarity checking,\n continuity testing, component activation, grounding test, short circuit tracing, trailer lighting inspection,\n and fast vehicle electrical troubleshooting.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cp class=\"obdm-v100-intro\"\u003e\n The \u003cstrong\u003eOBDMonster V100 Circuit Tester\u003c\/strong\u003e is a practical automotive electrical diagnostic tool built for\n technicians, mobile mechanics, DIY users, trailer owners, motorcycle users, and repair shops. It helps users quickly\n test vehicle circuits, identify power and ground, check continuity, activate components, verify grounding quality,\n and locate electrical faults more efficiently.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Automotive electrical problems can be time-consuming when you only rely on guesswork. A blown fuse, dead light,\n weak ground, bad relay, damaged wire, short circuit, or failed component can stop a system from working properly.\n The V100 helps simplify the diagnostic process by giving clear voltage, polarity, and circuit feedback directly\n at the test point.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-v100-highlight\"\u003e\n \u003cp\u003e\n \u003cstrong\u003eCore Advantage:\u003c\/strong\u003e The V100 supports \u003cstrong\u003e0–80V DC voltage testing\u003c\/strong\u003e, positive and negative\n polarity output through the probe, continuity testing, component activation, grounding test, short circuit location,\n trailer lighting connection test, spark plug checking, overload protection, and a long 5M test lead for whole-vehicle inspection.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/7213229a-c885-458e-9f0d-53739c044239.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V100 multifunction 0 to 80V DC automotive circuit tester for voltage continuity polarity component activation short circuit grounding trailer lighting and spark plug testing\"\u003e\n\n \u003ch2\u003eMultifunction 0–80V DC Circuit Tester for Cars, Trucks, Trailers, and More\u003c\/h2\u003e\n\n \u003cp\u003e\n The OBDMonster V100 is designed for a wide range of vehicle electrical systems from \u003cstrong\u003e0V to 80V DC\u003c\/strong\u003e.\n This makes it useful for many automotive, motorcycle, trailer, boat, RV, and equipment electrical applications.\n It can be used to test battery voltage, polarity, circuit continuity, grounding quality, component condition,\n and wiring faults.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-v100-grid\"\u003e\n \u003cdiv class=\"obdm-v100-card\"\u003e\n \u003ch3\u003e0–80V DC Measurement\u003c\/h3\u003e\n \u003cp\u003e\n Test a wide range of DC automotive electrical circuits, including low-voltage and common vehicle power systems.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-card\"\u003e\n \u003ch3\u003ePolarity Identification\u003c\/h3\u003e\n \u003cp\u003e\n Quickly identify positive and negative circuits using clear red and green LED feedback.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-card\"\u003e\n \u003ch3\u003eComponent Activation\u003c\/h3\u003e\n \u003cp\u003e\n Apply positive or negative output through the probe to test supported electrical components.\n \u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eBattery DC Voltage and Polarity Testing\u003c\/h2\u003e\n\n \u003cp\u003e\n The V100 can test automotive DC voltage and circuit polarity by connecting the tool to the battery using the\n battery clips. The clear digital display and LED indicators help users quickly identify voltage, positive circuits,\n negative circuits, and ground conditions.\n \u003c\/p\u003e\n\n \u003cp\u003e\n When testing wiring, plugs, fuse boxes, relays, switches, or connectors, polarity identification is one of the\n fastest ways to understand whether the circuit has power, ground, or an open condition. This helps reduce\n unnecessary disassembly and speeds up electrical diagnosis.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/4687718a-24b5-49b9-ab77-7117eae32cae.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V100 testing automotive voltage and polarity by connecting battery clips to vehicle battery\"\u003e\n\n \u003ch2\u003eContinuity Testing for Automotive Circuits\u003c\/h2\u003e\n\n \u003cp\u003e\n Continuity testing helps determine whether a wire, switch, fuse, relay path, connector, or circuit section is\n connected properly. The V100 can help users check whether the connection in an automotive circuit is normal,\n disconnected, or open.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This is especially useful when diagnosing broken wires, loose terminals, corroded connectors, bad switches,\n damaged harnesses, and electrical circuits that appear normal but fail under operation.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/4745b559-a860-446f-8fee-ba1a9d1a5d4c.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V100 automotive circuit continuity test for connected and disconnected wiring diagnosis\"\u003e\n\n \u003ch2\u003eOnline and Offline Component Activation\u003c\/h2\u003e\n\n \u003cp\u003e\n The OBDMonster V100 can activate and test supported components by outputting positive or negative current through\n the probe. This allows users to check whether an electrical component can operate before replacing parts or\n tracing deeper into the circuit.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Depending on the polarity of the component contacts, the probe output can be switched to positive or negative by\n pressing the button. This makes the V100 useful for quick testing of lights, relays, motors, solenoids, fans,\n horns, switches, and other supported electrical loads.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-v100-note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Component activation should only be performed on circuits and components that are safe\n for direct power or ground testing. Do not apply power to control modules, data lines, sensitive sensors, or circuits\n unless the service procedure confirms it is safe.\n \u003c\/div\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b7b924fd-ffbe-4707-b9d7-cb6172229708.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V100 online and offline activation testing of automotive electrical components using positive and negative probe output\"\u003e\n\n \u003ch2\u003eJumper Testing for Faster Fault Location\u003c\/h2\u003e\n\n \u003cp\u003e\n Jumper testing helps technicians bypass damaged components or wiring sections to locate faults faster. The V100 can\n be used to help confirm whether a problem is caused by the component itself, wiring damage, poor connection, bad\n ground, or missing power supply.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This function is valuable when troubleshooting circuits where the load does not operate normally. By isolating parts\n of the circuit, users can narrow down the fault area before replacing components.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/6e98d81c-947d-4daa-9e02-0cf2d76433fd.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V100 troubleshooting with jumper testing to bypass damaged wiring or components and locate electrical faults faster\"\u003e\n\n \u003ch2\u003eGrounding Test for Poor Ground Diagnosis\u003c\/h2\u003e\n\n \u003cp\u003e\n Poor grounding is one of the most common causes of vehicle electrical problems. A weak or unstable ground can cause\n lights to malfunction, motors to run poorly, relays to behave unpredictably, sensors to give incorrect readings,\n or accessories to stop working.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The V100 helps verify grounding quality and troubleshoot circuits caused by poor grounding. A good ground condition\n provides clear feedback, helping users identify whether the ground path is reliable or needs further inspection.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/2ecade67-db88-4593-9c79-274a57b7f623.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V100 grounding test for verifying good grounding and troubleshooting poor ground automotive circuits\"\u003e\n\n \u003ch2\u003eDesigned for Real Vehicle Electrical Troubleshooting\u003c\/h2\u003e\n\n \u003cp\u003e\n The V100 is built for practical repair scenarios. It can help test circuits from the front to the rear of the vehicle\n using the extended 5M test lead, making it easier to inspect lighting circuits, trailer wiring, fuse boxes, battery\n circuits, engine bay components, and rear electrical systems.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-v100-dark-box\"\u003e\n \u003ch2\u003eCommon Applications\u003c\/h2\u003e\n \u003cul class=\"obdm-v100-list\"\u003e\n \u003cli\u003e\n\u003cstrong\u003eDC voltage testing:\u003c\/strong\u003e Check vehicle battery voltage and circuit voltage from 0–80V DC.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePolarity testing:\u003c\/strong\u003e Identify positive and negative circuits with red\/green LED feedback.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContinuity testing:\u003c\/strong\u003e Check switches, relays, diodes, fuses, wires, and circuit paths.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComponent activation:\u003c\/strong\u003e Test supported lights, relays, motors, solenoids, fans, pumps, and horns.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eShort circuit tracing:\u003c\/strong\u003e Help locate the specific position of short circuits and wiring faults.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrounding test:\u003c\/strong\u003e Verify ground quality and troubleshoot circuits caused by poor grounding.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTrailer lighting test:\u003c\/strong\u003e Inspect trailer light connection circuits and rear wiring issues.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSpark plug checking:\u003c\/strong\u003e Support basic spark plug-related inspection where applicable.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eKey Features\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-v100-feature-row\"\u003e\n \u003cdiv class=\"obdm-v100-feature-box\"\u003e\n \u003ch3\u003e0–80V DC Test Range\u003c\/h3\u003e\n \u003cp\u003e\n Supports a wide DC voltage measurement range for automotive electrical systems, battery circuits, and vehicle wiring.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-feature-box\"\u003e\n \u003ch3\u003eVoltage and Polarity Display\u003c\/h3\u003e\n \u003cp\u003e\n Tests battery DC voltage and circuit polarity with a clear acrylic display, LED front light, and backlit readout.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-feature-box\"\u003e\n \u003ch3\u003eContinuity Test\u003c\/h3\u003e\n \u003cp\u003e\n Helps check whether wires, switches, relays, diodes, fuses, and circuits are connected normally.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-feature-box\"\u003e\n \u003ch3\u003eComponent Activation\u003c\/h3\u003e\n \u003cp\u003e\n Outputs positive or negative current through the probe for testing supported automotive electrical components.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-feature-box\"\u003e\n \u003ch3\u003eGrounding Test\u003c\/h3\u003e\n \u003cp\u003e\n Verifies grounding quality and helps diagnose faults caused by poor or unstable ground connections.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-feature-box\"\u003e\n \u003ch3\u003e5M Extended Test Lead\u003c\/h3\u003e\n \u003cp\u003e\n Covers front-to-rear vehicle testing, making it easier to diagnose trucks, cars, trailers, boats, and motorcycles.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-feature-box\"\u003e\n \u003ch3\u003eOverload Protection\u003c\/h3\u003e\n \u003cp\u003e\n Built-in overload protection helps protect the tester during high-current conditions and provides buzzer warning.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-feature-box\"\u003e\n \u003ch3\u003eShort Circuit Finder\u003c\/h3\u003e\n \u003cp\u003e\n Helps locate wiring faults, blown fuse causes, and abnormal circuit paths more efficiently.\n \u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-v100-table-wrap\"\u003e\n \u003ctable class=\"obdm-v100-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eProduct Name\u003c\/td\u003e\n \u003ctd\u003eOBDMonster V100 Automotive Circuit Tester\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTool Type\u003c\/td\u003e\n \u003ctd\u003ePower circuit probe tester, automotive test light, voltage tester, short circuit finder\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVoltage Range\u003c\/td\u003e\n \u003ctd\u003e0–80V DC automotive electrical systems\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMain Functions\u003c\/td\u003e\n \u003ctd\u003eDC voltage test, polarity test, continuity test, component activation, grounding test, short circuit tracing, trailer lighting test\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePolarity Indication\u003c\/td\u003e\n \u003ctd\u003eRed LED for positive circuit, green LED for negative \/ ground circuit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eComponent Activation\u003c\/td\u003e\n \u003ctd\u003eSupports positive or negative probe output for compatible electrical loads\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTest Lead Length\u003c\/td\u003e\n \u003ctd\u003e5M extended detection line for front-to-rear vehicle circuit testing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eProtection\u003c\/td\u003e\n \u003ctd\u003eOverload protection with buzzer prompt under excessive current conditions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDisplay\u003c\/td\u003e\n \u003ctd\u003eAcrylic digital display with backlight and front LED light\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplications\u003c\/td\u003e\n \u003ctd\u003eCars, trucks, boats, trailers, motorcycles, RVs, equipment, and automotive electrical systems\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eWho Should Use the OBDMonster V100?\u003c\/h2\u003e\n\n \u003cp\u003e\n The V100 is designed for users who need a fast, direct way to test automotive electrical circuits. It is suitable\n for professional repair shops, mobile mechanics, trailer service users, fleet maintenance teams, and DIY users\n who regularly work with vehicle wiring and components.\n \u003c\/p\u003e\n\n \u003cul class=\"obdm-v100-list\"\u003e\n \u003cli\u003eProfessional auto repair shops\u003c\/li\u003e\n \u003cli\u003eAutomotive electrical diagnostic technicians\u003c\/li\u003e\n \u003cli\u003eMobile mechanics\u003c\/li\u003e\n \u003cli\u003eTrailer and RV service users\u003c\/li\u003e\n \u003cli\u003eMotorcycle and boat maintenance users\u003c\/li\u003e\n \u003cli\u003eFleet maintenance teams\u003c\/li\u003e\n \u003cli\u003eUsed car inspection professionals\u003c\/li\u003e\n \u003cli\u003eAdvanced DIY users and automotive enthusiasts\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"obdm-v100-note\"\u003e\n \u003cstrong\u003eSafety Note:\u003c\/strong\u003e Always follow proper automotive electrical testing procedures. Do not apply power\n to sensitive control modules, communication lines, airbag circuits, sensors, or circuits that are not designed\n for direct activation. When testing components, confirm the circuit design and rated current before applying output.\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-faq\"\u003e\n \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the OBDMonster V100 used for?\u003c\/summary\u003e\n \u003cp\u003e\n The V100 is used for automotive electrical diagnostics, including DC voltage testing, polarity testing,\n continuity testing, component activation, grounding test, short circuit tracing, and trailer lighting inspection.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat voltage range does the V100 support?\u003c\/summary\u003e\n \u003cp\u003e\n The OBDMonster V100 supports 0–80V DC automotive electrical system testing.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan it identify positive and negative polarity?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V100 uses LED feedback to help identify positive and negative circuits. Red indicates positive,\n and green indicates negative or ground condition.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan the V100 activate components?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V100 can output positive or negative current through the probe to activate supported components\n such as lights, relays, motors, solenoids, and similar electrical loads.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan it help diagnose poor grounding?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V100 includes grounding test support to help verify ground quality and troubleshoot circuits caused\n by poor or unstable grounding.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eIs it suitable for trailers and motorcycles?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V100 can be used on many cars, trucks, trailers, boats, motorcycles, RVs, and equipment electrical systems\n within the supported 0–80V DC range.\n \u003c\/p\u003e\n \u003c\/details\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v100-cta\"\u003e\n \u003ch2\u003eOBDMonster V100: Find Electrical Faults Faster\u003c\/h2\u003e\n \u003cp\u003e\n The OBDMonster V100 Circuit Tester combines 0–80V DC voltage testing, polarity identification, continuity testing,\n component activation, grounding test, short circuit tracing, overload protection, and a 5M extended test lead.\n It is a practical automotive electrical diagnostic tool built to help technicians and serious DIY users troubleshoot\n vehicle circuits with greater speed and confidence.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e","brand":"OBDMonster","offers":[{"title":"Default Title","offer_id":48204788072683,"sku":"CC0192","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/3641\/7003\/files\/1_3bdc08b3-6e5a-4dd1-ac48-646d66f30302.jpg?v=1777971893"},{"product_id":"obdmonster-v200-automotive-circuit-tester","title":"OBDMonster V200 Circuit Tester | Power Probe with 180° Screen Rotation","description":"\u003csection class=\"obdm-v200-product\"\u003e\n \u003cstyle\u003e\n .obdm-v200-product {\n max-width: 1180px;\n margin: 0 auto;\n padding: 36px 18px;\n font-family: Arial, Helvetica, sans-serif;\n color: #1f1f1f;\n line-height: 1.7;\n background: #ffffff;\n }\n\n .obdm-v200-product * {\n box-sizing: border-box;\n }\n\n .obdm-v200-product img {\n width: 100%;\n height: auto;\n display: block;\n border-radius: 16px;\n margin: 28px 0 34px;\n box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);\n }\n\n .obdm-v200-hero {\n background: linear-gradient(135deg, #050505 0%, #151515 58%, #300000 100%);\n color: 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Tester\u003c\/span\u003e\n\u003c\/h1\u003e\n \u003cp\u003e\n A professional power circuit probe tester with multimeter functions, component activation, oscilloscope mode,\n 180° screen rotation, screen data freeze, LED illumination, buzzer alarm, and wide automotive electrical diagnostic coverage.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cp class=\"obdm-v200-intro\"\u003e\n The \u003cstrong\u003eOBDMonster V200 Circuit Tester\u003c\/strong\u003e is designed for technicians, mobile mechanics, automotive electricians,\n fleet service teams, and advanced DIY users who need a more capable way to diagnose vehicle electrical problems.\n It combines a power circuit probe, automotive voltage tester, multimeter-style tester, component activation tool,\n continuity tester, and signal inspection tool into one practical handheld device.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Compared with a basic test light, the V200 gives users more diagnostic information and better control. It helps identify\n voltage, polarity, continuity, resistance, diode condition, open or broken circuits, frequency signals, component operation,\n grounding quality, and trailer light connection problems. It is built for real-world automotive electrical troubleshooting.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-v200-highlight\"\u003e\n \u003cp\u003e\n \u003cstrong\u003eCore Advantage:\u003c\/strong\u003e The V200 supports multimeter functions, component activation, quick settings,\n polarity and voltage testing, continuity and ground testing, jumper testing, short circuit tracing, trailer light\n connection testing, diode testing, overload protection, oscilloscope mode, screen data freeze, buzzer alarm,\n and \u003cstrong\u003e180° screen rotation\u003c\/strong\u003e for easier reading in tight working spaces.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/7cccfc84-2b71-4876-b6f0-59fec1ef7758.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V200 power circuit tester with multimeter activation settings polarity voltage continuity ground test jumper test oscilloscope screen rotation data freeze and overload protection\"\u003e\n\n \u003ch2\u003eWhat Can the OBDMonster V200 Power Circuit Tester Do?\u003c\/h2\u003e\n\n \u003cp\u003e\n The V200 is built around three practical work areas: \u003cstrong\u003emultimeter-style electrical testing\u003c\/strong\u003e,\n \u003cstrong\u003ecomponent activation\u003c\/strong\u003e, and \u003cstrong\u003etool settings\u003c\/strong\u003e. This gives technicians a more complete\n workflow for diagnosing circuits, testing loads, and adjusting tool behavior during repair work.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-v200-grid\"\u003e\n \u003cdiv class=\"obdm-v200-card\"\u003e\n \u003ch3\u003eMultimeter Functions\u003c\/h3\u003e\n \u003cp\u003e\n Test polarity, voltage, continuity, ground, resistance, diode condition, frequency, and open or broken circuits.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-card\"\u003e\n \u003ch3\u003eComponent Activation\u003c\/h3\u003e\n \u003cp\u003e\n Activate supported electrical components such as headlights, blowers, fuel pumps, solenoid valves, and more.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-card\"\u003e\n \u003ch3\u003eSmart Settings\u003c\/h3\u003e\n \u003cp\u003e\n Access quick self-test, buzzer alarm, screen rotation, and screen data freeze for more efficient operation.\n \u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eMultimeter Functions and Component Activation in One Tool\u003c\/h2\u003e\n\n \u003cp\u003e\n The OBDMonster V200 is more than a standard automotive test light. It includes practical multimeter-style functions\n that help users inspect resistance, diodes, positive and negative circuits, open or broken circuits, frequency signals,\n and oscilloscope-style signal behavior.\n \u003c\/p\u003e\n\n \u003cp\u003e\n At the same time, the V200 supports component activation. This allows users to apply power or ground to supported\n electrical components to check whether they work before replacing parts or disassembling the circuit further.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/37581b54-3d8a-4d46-a336-aaf34b57d9fe.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V200 multimeter functions resistance diode open circuit positive negative frequency oscilloscope and component activation for headlights blowers fuel pumps solenoid valves\"\u003e\n\n \u003cdiv class=\"obdm-v200-dark-box\"\u003e\n \u003ch2\u003eCommon Components You Can Test and Activate\u003c\/h2\u003e\n \u003cp\u003e\n Component activation helps confirm whether a load itself is functional or whether the fault is caused by wiring,\n relay control, grounding, fuse supply, or module command.\n \u003c\/p\u003e\n \u003cul class=\"obdm-v200-list\"\u003e\n \u003cli\u003e\n\u003cstrong\u003eHeadlamps:\u003c\/strong\u003e Check lighting operation and related wiring circuits.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBlowers:\u003c\/strong\u003e Test supported blower motors and power supply circuits.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFuel pumps:\u003c\/strong\u003e Verify pump operation where direct activation is safe and supported.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSolenoid valves:\u003c\/strong\u003e Activate supported solenoids for functional testing.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRelays and accessories:\u003c\/strong\u003e Inspect supported loads, electrical accessories, and related wiring.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eHigh-Definition Color Screen with 180° Rotation\u003c\/h2\u003e\n\n \u003cp\u003e\n The V200 features a \u003cstrong\u003e1.8-inch high-definition TFT color screen\u003c\/strong\u003e designed to display test results\n clearly, even under strong sunlight. A clear display helps technicians read voltage values, diode test results,\n waveform-style signal data, frequency, duty cycle, maximum voltage, and minimum voltage more efficiently.\n \u003c\/p\u003e\n\n \u003cp\u003e\n One of the most practical upgrades is the \u003cstrong\u003e180° screen rotation function\u003c\/strong\u003e. Automotive electrical\n testing often happens under dashboards, inside door panels, around fuse boxes, behind panels, or inside engine bays.\n Screen rotation allows users to flip the display orientation for easier viewing from awkward angles.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The V200 also supports \u003cstrong\u003escreen data freeze\u003c\/strong\u003e, allowing users to hold important test readings on the\n display when checking values in difficult positions or when comparing test results.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/0c9a02c3-c3c1-490d-b2ce-c7905b831018.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V200 high definition colour screen 1.8 inch TFT display screen rotation screen data freeze LED indicator voltage diode waveform frequency duty cycle\"\u003e\n\n \u003ch2\u003ePhysical Buttons, Removable Probe, LED Illumination, and Buzzer\u003c\/h2\u003e\n\n \u003cp\u003e\n The OBDMonster V200 is built for practical shop use. Physical buttons make operation easier when wearing gloves\n or working in dirty environments. The removable probe design allows easier maintenance and replacement when needed.\n A non-slip grip helps improve hand control during under-hood or under-dash testing.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The built-in LED illumination helps light up dark test areas, such as fuse boxes, engine compartments, door panels,\n and trailer connectors. The buzzer provides audible feedback during supported tests, reducing the need to watch the\n screen constantly while checking continuity, polarity, or circuit response.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/3dc05819-6cf5-4b82-9207-69785608b269.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V200 physical buttons removable probe non slip grip LED illumination and buzzer automotive circuit tester design\"\u003e\n\n \u003ch2\u003eWide Range of Applications\u003c\/h2\u003e\n\n \u003cp\u003e\n The V200 is suitable for many automotive and equipment electrical systems. It can be used for small cars, pickup\n trucks, off-road vehicles, battery-powered vehicles, motorbikes, lorries, RVs, trailers, boats, and fleet maintenance\n applications.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Whether you are checking a dead light, tracing a short circuit, testing a trailer connector, diagnosing a fuel pump,\n verifying a ground, or inspecting an electrical accessory, the V200 gives users a more complete diagnostic workflow.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/d421e9a6-a486-4da9-a2df-61ce75b7aa93.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V200 wide range applications small car pickup truck off road vehicle battery powered vehicle motorbike and lorry automotive electrical diagnostics\"\u003e\n\n \u003ch2\u003eDesigned for Real Automotive Electrical Problems\u003c\/h2\u003e\n\n \u003cp\u003e\n The V200 helps users diagnose common vehicle electrical faults more efficiently. It can reduce guesswork when dealing\n with blown fuses, dead lights, poor grounds, bad relays, weak motor circuits, open wires, short circuits, and unstable\n electrical signals.\n \u003c\/p\u003e\n\n \u003cul class=\"obdm-v200-list\"\u003e\n \u003cli\u003e\n\u003cstrong\u003eVoltage and polarity testing:\u003c\/strong\u003e Identify positive, negative, and open circuits faster.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContinuity and ground testing:\u003c\/strong\u003e Check wire integrity, switches, connectors, fuses, relays, and grounding quality.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eResistance and diode testing:\u003c\/strong\u003e Inspect components, circuit paths, and diode behavior.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFrequency and signal testing:\u003c\/strong\u003e View frequency, duty cycle, max voltage, min voltage, and waveform-style data.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComponent activation:\u003c\/strong\u003e Test supported lights, motors, pumps, relays, solenoids, and accessories.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eShort circuit tracing:\u003c\/strong\u003e Help locate abnormal electrical paths and blown-fuse causes.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTrailer light testing:\u003c\/strong\u003e Inspect trailer light and rear vehicle wiring circuits.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eKey Features\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-v200-feature-row\"\u003e\n \u003cdiv class=\"obdm-v200-feature-box\"\u003e\n \u003ch3\u003eMultimeter-Style Testing\u003c\/h3\u003e\n \u003cp\u003e\n Supports resistance test, diode test, open or broken circuit test, polarity test, frequency test, and oscilloscope mode.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-feature-box\"\u003e\n \u003ch3\u003eComponent Activation\u003c\/h3\u003e\n \u003cp\u003e\n Activate supported electrical loads including headlamps, blowers, fuel pumps, solenoid valves, relays, and accessories.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-feature-box\"\u003e\n \u003ch3\u003e180° Screen Rotation\u003c\/h3\u003e\n \u003cp\u003e\n Flip the display orientation for easier reading when working under dashboards, inside engine bays, or in tight spaces.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-feature-box\"\u003e\n \u003ch3\u003eScreen Data Freeze\u003c\/h3\u003e\n \u003cp\u003e\n Freeze important test readings on the display for easier review and comparison during diagnostic work.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-feature-box\"\u003e\n \u003ch3\u003eHigh-Definition Color Screen\u003c\/h3\u003e\n \u003cp\u003e\n 1.8-inch TFT color screen provides clear reading of voltage, diode, waveform-style signal, frequency, and duty cycle data.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-feature-box\"\u003e\n \u003ch3\u003eLED Illumination and Buzzer\u003c\/h3\u003e\n \u003cp\u003e\n Built-in LED lights improve visibility in dark areas, while buzzer feedback supports faster testing.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-feature-box\"\u003e\n \u003ch3\u003eRemovable Probe\u003c\/h3\u003e\n \u003cp\u003e\n Replaceable probe design supports easier maintenance and longer service usability.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-feature-box\"\u003e\n \u003ch3\u003eNon-Slip Grip\u003c\/h3\u003e\n \u003cp\u003e\n Ergonomic body design improves control during under-hood, under-dash, and workshop electrical testing.\n \u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-v200-table-wrap\"\u003e\n \u003ctable class=\"obdm-v200-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eProduct Name\u003c\/td\u003e\n \u003ctd\u003eOBDMonster V200 Automotive Circuit Tester\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTool Type\u003c\/td\u003e\n \u003ctd\u003ePower circuit probe tester, automotive electrical tester, multimeter-style circuit tester, component activation tool\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMain Functions\u003c\/td\u003e\n \u003ctd\u003eVoltage test, polarity test, continuity test, ground test, resistance test, diode test, frequency test, oscilloscope mode, component activation, short circuit tracing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eScreen\u003c\/td\u003e\n \u003ctd\u003e1.8-inch high-definition TFT color screen\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eScreen Functions\u003c\/td\u003e\n \u003ctd\u003e180° screen rotation and screen data freeze\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSignal Display\u003c\/td\u003e\n \u003ctd\u003eMax voltage, min voltage, frequency, duty cycle, and waveform-style data display\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eLighting and Alert\u003c\/td\u003e\n \u003ctd\u003eLED illumination and buzzer alarm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eProbe Design\u003c\/td\u003e\n \u003ctd\u003eRemovable probe with physical button control and non-slip grip\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplications\u003c\/td\u003e\n \u003ctd\u003eCars, pickup trucks, off-road vehicles, battery-powered vehicles, motorbikes, lorries, trailers, RVs, boats, and automotive electrical systems\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRecommended Users\u003c\/td\u003e\n \u003ctd\u003eProfessional technicians, automotive electricians, mobile mechanics, fleet maintenance teams, trailer service users, and advanced DIY users\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eWho Should Use the OBDMonster V200?\u003c\/h2\u003e\n\n \u003cp\u003e\n The V200 is designed for users who need a more complete automotive electrical diagnostic workflow than a basic test light.\n It is especially useful for technicians who want fast circuit feedback, clear display readings, component activation,\n and signal inspection in one tool.\n \u003c\/p\u003e\n\n \u003cul class=\"obdm-v200-list\"\u003e\n \u003cli\u003eProfessional auto repair shops\u003c\/li\u003e\n \u003cli\u003eAutomotive electrical diagnostic technicians\u003c\/li\u003e\n \u003cli\u003eMobile mechanics\u003c\/li\u003e\n \u003cli\u003eFleet maintenance teams\u003c\/li\u003e\n \u003cli\u003eTrailer and RV service users\u003c\/li\u003e\n \u003cli\u003eMotorcycle and powersports repair users\u003c\/li\u003e\n \u003cli\u003eOff-road vehicle and utility vehicle owners\u003c\/li\u003e\n \u003cli\u003eAdvanced DIY users and automotive enthusiasts\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"obdm-v200-note\"\u003e\n \u003cstrong\u003eSafety Note:\u003c\/strong\u003e Always follow proper automotive electrical testing procedures. Component activation\n should only be performed on circuits and components designed for direct power or ground testing. Do not apply power\n to sensitive control modules, communication lines, airbag circuits, sensors, or circuits unless the service procedure\n confirms it is safe.\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-faq\"\u003e\n \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the OBDMonster V200 used for?\u003c\/summary\u003e\n \u003cp\u003e\n The V200 is used for automotive electrical diagnostics, including voltage testing, polarity testing, continuity testing,\n resistance testing, diode testing, frequency testing, ground testing, component activation, oscilloscope-style signal inspection,\n and short circuit tracing.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eDoes the V200 have 180° screen rotation?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V200 supports 180° screen rotation, making the display easier to read when working under dashboards,\n inside engine bays, near fuse boxes, or in other tight spaces.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan the V200 activate components?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V200 can activate supported electrical components such as headlamps, blowers, fuel pumps, solenoid valves,\n relays, motors, and accessories when the circuit is safe for direct activation.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat does screen data freeze do?\u003c\/summary\u003e\n \u003cp\u003e\n Screen data freeze allows users to hold a test result on the screen, making it easier to review readings when working\n in awkward positions or comparing values.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eDoes the V200 support frequency testing?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V200 supports frequency-related signal display, including frequency, duty cycle, maximum voltage, and minimum voltage\n for supported circuit tests.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat vehicles can use the V200?\u003c\/summary\u003e\n \u003cp\u003e\n The V200 can be used for many small cars, pickup trucks, off-road vehicles, battery-powered vehicles, motorbikes,\n lorries, trailers, RVs, boats, and automotive electrical systems.\n \u003c\/p\u003e\n \u003c\/details\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v200-cta\"\u003e\n \u003ch2\u003eOBDMonster V200: Advanced Circuit Testing Made Practical\u003c\/h2\u003e\n \u003cp\u003e\n The OBDMonster V200 Circuit Tester combines multimeter-style diagnostics, component activation, high-definition color display,\n 180° screen rotation, oscilloscope mode, screen data freeze, LED illumination, buzzer feedback, removable probe design,\n and wide vehicle application coverage. It is a practical electrical diagnostic tool for technicians, repair shops,\n mobile mechanics, and serious automotive users.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e","brand":"OBDMonster","offers":[{"title":"Default Title","offer_id":48204828213483,"sku":"CC0340","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/3641\/7003\/files\/1_da917b2f-238c-4b48-9b74-f8fbfb3778b9.jpg?v=1777972772"},{"product_id":"obdmonster-v400-circuit-tester-12-24v-short-open-circuit-finder","title":"OBDMonster V400 Circuit Tester | 12-24V Short Open Circuit Finder","description":"\u003csection class=\"obdm-v400-product\"\u003e\n \u003cstyle\u003e\n .obdm-v400-product {\n max-width: 1180px;\n margin: 0 auto;\n padding: 36px 18px;\n font-family: Arial, Helvetica, sans-serif;\n color: #1f1f1f;\n line-height: 1.7;\n background: #ffffff;\n }\n\n .obdm-v400-product * {\n box-sizing: border-box;\n }\n\n .obdm-v400-product img {\n width: 100%;\n height: auto;\n display: block;\n border-radius: 16px;\n margin: 28px 0 34px;\n box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);\n }\n\n .obdm-v400-hero {\n background: linear-gradient(135deg, #050505 0%, #151515 58%, #300000 100%);\n color: #ffffff;\n padding: 42px 34px;\n border-radius: 18px;\n margin-bottom: 34px;\n position: relative;\n overflow: hidden;\n }\n\n .obdm-v400-hero::after {\n content: \"\";\n position: absolute;\n right: -90px;\n top: -90px;\n width: 280px;\n height: 280px;\n background: rgba(230, 0, 18, 0.35);\n border-radius: 50%;\n filter: blur(60px);\n }\n\n .obdm-v400-label {\n display: inline-block;\n position: relative;\n z-index: 2;\n padding: 7px 14px;\n border: 1px solid #e60012;\n color: #ff2a2a;\n font-size: 13px;\n letter-spacing: 1.4px;\n text-transform: uppercase;\n font-weight: 700;\n margin-bottom: 18px;\n }\n\n .obdm-v400-hero h1 {\n position: relative;\n z-index: 2;\n font-size: 40px;\n line-height: 1.15;\n margin: 0 0 16px;\n color: #ffffff;\n 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.obdm-v400-dark-box p,\n .obdm-v400-dark-box li {\n color: #eeeeee;\n }\n\n .obdm-v400-dark-box strong {\n color: #ff2a2a;\n }\n\n .obdm-v400-table-wrap {\n overflow-x: auto;\n margin: 28px 0;\n }\n\n .obdm-v400-table {\n width: 100%;\n border-collapse: collapse;\n min-width: 720px;\n }\n\n .obdm-v400-table th,\n .obdm-v400-table td {\n border: 1px solid #dddddd;\n padding: 14px 16px;\n text-align: left;\n vertical-align: top;\n font-size: 15px;\n }\n\n .obdm-v400-table th {\n background: #111111;\n color: #ffffff;\n font-weight: 700;\n }\n\n .obdm-v400-table td:first-child {\n font-weight: 700;\n color: #e60012;\n width: 28%;\n }\n\n .obdm-v400-note {\n font-size: 14px;\n color: #555555;\n background: #fafafa;\n border: 1px solid #e6e6e6;\n border-radius: 12px;\n padding: 18px;\n margin: 28px 0;\n }\n\n .obdm-v400-faq {\n margin-top: 38px;\n }\n\n .obdm-v400-faq details {\n border: 1px solid #dddddd;\n border-radius: 12px;\n padding: 16px 18px;\n margin-bottom: 12px;\n background: #ffffff;\n }\n\n .obdm-v400-faq summary {\n cursor: pointer;\n font-weight: 700;\n color: #111111;\n font-size: 16px;\n }\n\n .obdm-v400-faq details p {\n margin-top: 12px;\n margin-bottom: 0;\n color: #333333;\n }\n\n .obdm-v400-cta {\n margin-top: 46px;\n padding: 36px;\n border-radius: 18px;\n background: linear-gradient(135deg, #111111 0%, #1a1a1a 60%, #330000 100%);\n color: #ffffff;\n text-align: center;\n }\n\n .obdm-v400-cta h2 {\n color: #ffffff;\n margin-top: 0;\n }\n\n .obdm-v400-cta p {\n color: #eeeeee;\n max-width: 850px;\n margin: 0 auto;\n }\n\n @media (max-width: 900px) {\n .obdm-v400-grid,\n .obdm-v400-feature-row {\n grid-template-columns: 1fr;\n }\n\n .obdm-v400-hero h1 {\n font-size: 34px;\n }\n }\n\n @media (max-width: 600px) {\n .obdm-v400-product {\n padding: 26px 14px;\n }\n\n .obdm-v400-hero {\n padding: 34px 22px;\n }\n\n .obdm-v400-hero h1 {\n font-size: 29px;\n }\n\n .obdm-v400-hero p {\n font-size: 16px;\n }\n\n .obdm-v400-product h2 {\n font-size: 25px;\n }\n }\n \u003c\/style\u003e\n\n \u003cdiv class=\"obdm-v400-hero\"\u003e\n \u003cdiv class=\"obdm-v400-label\"\u003eOBDMonster Diagnostics \u0026amp; Tools\u003c\/div\u003e\n \u003ch1\u003eOBDMonster V400 \u003cspan\u003ePower Circuit Tester\u003c\/span\u003e\n\u003c\/h1\u003e\n \u003cp\u003e\n A professional 7-in-1 automotive power circuit tester for 12V \/ 24V electrical diagnostics, 0–80V DC circuit testing,\n AC\/DC voltage inspection, oscilloscope signal analysis, car battery testing, fuel injector testing, component activation,\n relay and fuse testing, trailer light testing, short\/open circuit tracing, and workshop-level electrical troubleshooting.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cp class=\"obdm-v400-intro\"\u003e\n The \u003cstrong\u003eOBDMonster V400 12-24V Electrical Short Open Breaker Circuit Finder\u003c\/strong\u003e is built for professional\n technicians, mobile mechanics, automotive electricians, fleet maintenance teams, trailer service users, and advanced DIY\n mechanics who need a complete electrical diagnostic tool in one kit. It combines the workflow of a power probe,\n circuit tester, multimeter, oscilloscope, battery tester, injector tester, and component activation tool.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Vehicle electrical problems can be difficult to diagnose with a basic test light. A blown fuse, poor ground, open wire,\n short circuit, weak relay, unstable signal, faulty trailer connector, fuel injector issue, or failed electrical component\n can waste hours of repair time. The V400 helps users test, trace, activate, and verify circuits faster with a clear digital\n interface and multiple professional diagnostic modes.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-v400-highlight\"\u003e\n \u003cp\u003e\n \u003cstrong\u003eCore Advantage:\u003c\/strong\u003e The V400 supports 7-in-1 circuit detection, 0–80V DC testing, 6–32V input voltage,\n 32.8FT working reach, upgraded 30A crocodile clips, multimeter mode, oscilloscope mode, fuel injector test,\n 12V\/24V battery test, component activation, hardware test, application test, 180° screen rotation, built-in light,\n beep warning, 11-language interface, and Type-C upgradeability.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/bc2bebe1-5382-4976-9169-38eeade8ad5f.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 7-in-1 power circuit tester with multimeter oscilloscope fuel injector test car battery test component activation hardware test and application test\"\u003e\n\n \u003ch2\u003e7-in-1 Power Circuit Tester for Complete Automotive Electrical Diagnostics\u003c\/h2\u003e\n\n \u003cp\u003e\n The OBDMonster V400 is designed as a professional all-in-one circuit tester. Instead of switching between multiple\n tools, users can perform multimeter testing, oscilloscope signal analysis, fuel injector testing, car battery testing,\n component activation, hardware test, and application-level circuit inspection from one handheld diagnostic device.\n \u003c\/p\u003e\n\n \u003cdiv class=\"obdm-v400-grid\"\u003e\n \u003cdiv class=\"obdm-v400-card\"\u003e\n \u003ch3\u003eMultimeter Function\u003c\/h3\u003e\n \u003cp\u003e\n Test voltage, resistance, polarity, frequency, continuity, short\/open circuits, and related electrical conditions.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-card\"\u003e\n \u003ch3\u003eOscilloscope Mode\u003c\/h3\u003e\n \u003cp\u003e\n View signal patterns including sine waves, square waves, triangular waves, and sawtooth waves.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-card\"\u003e\n \u003ch3\u003eComponent Activation\u003c\/h3\u003e\n \u003cp\u003e\n Activate supported vehicle components including fans, wipers, windows, relays, motors, pumps, and solenoids.\n \u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003e0–80V DC Test Range, 6–32V Input, 32.8FT Cable, and 30A Crocodile Clips\u003c\/h2\u003e\n\n \u003cp\u003e\n The V400 supports a wide \u003cstrong\u003e0–80V DC test voltage range\u003c\/strong\u003e, making it practical for many automotive electrical\n systems and diagnostic situations. Its \u003cstrong\u003e6–32V DC input voltage range\u003c\/strong\u003e is suitable for common 12V and 24V\n vehicle environments.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The long \u003cstrong\u003e32.8FT cable\u003c\/strong\u003e gives technicians enough reach to work around the full vehicle, including engine bay,\n cabin, rear lighting area, trailer connector, cargo compartment, and underbody wiring sections. The upgraded\n \u003cstrong\u003e30A crocodile clips\u003c\/strong\u003e provide a stronger battery connection for stable testing.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/00adbb38-69a5-4db4-8221-09407f662564.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 circuit tester with 32.8FT cable 30A crocodile clips 0-80V DC test voltage range and 6-32V input voltage range\"\u003e\n\n \u003ch2\u003e320×240 TFT Screen with 180° Rotation and Red\/Green Polarity LED\u003c\/h2\u003e\n\n \u003cp\u003e\n The V400 features a large \u003cstrong\u003e320×240 TFT display\u003c\/strong\u003e designed to show test data clearly. During multimeter\n operation, users can long-press the freeze button to rotate the display \u003cstrong\u003e180 degrees\u003c\/strong\u003e, making the screen\n easier to read when working under dashboards, inside engine bays, near fuse boxes, around trailer connectors, or in\n other tight working positions.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Red and green polarity LEDs help users quickly identify positive and negative circuit conditions. This makes power and\n ground testing faster and reduces the chance of misreading circuit polarity during repair work.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/af78c4f9-938c-4f78-8cee-ef6b4998fec5.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 320x240 TFT screen with 180 degree screen rotation red green polarity LED frequency and duty cycle display\"\u003e\n\n \u003ch2\u003eBuilt-In Light and Beep Warning for Real Workshop Use\u003c\/h2\u003e\n\n \u003cp\u003e\n Automotive electrical testing often happens in dark or narrow areas. The V400 includes a built-in light near the probe\n to illuminate test points in fuse boxes, door panels, engine compartments, trailer connectors, and under-dash areas.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The beep warning provides audible feedback during supported test operations, allowing users to continue testing without\n staring at the screen at every moment. This is especially useful during continuity checks, circuit verification, and\n quick fault identification.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/18605788-4159-4078-94e8-a317d80bab13.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 circuit tester with built-in light and beep warning for automotive electrical troubleshooting\"\u003e\n\n \u003ch2\u003e11 Languages and Type-C Upgradeability\u003c\/h2\u003e\n\n \u003cp\u003e\n The V400 supports an 11-language interface, including English, French, Polish, Czech, Italian, German, Portuguese,\n Russian, Japanese, and Chinese Simplified \/ Traditional. This makes the tool easier to use for international repair shops,\n distributors, technicians, and training environments.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The Type-C USB upgrade interface supports equipment updates, helping the tool stay more serviceable and adaptable for\n future use.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/8dc5eec6-fd5d-45e1-9d9b-71d9cea53866.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 multi-language selection with 11 languages and Type-C USB upgradeability\"\u003e\n\n \u003ch2\u003eMultimeter, Oscilloscope, and 12V \/ 24V Car Battery Test\u003c\/h2\u003e\n\n \u003cp\u003e\n The V400 includes professional multimeter-style functions for voltage testing, resistance testing, frequency testing,\n short\/open circuit testing, polarity testing, diode testing, and CAN polarity testing. It also provides oscilloscope\n capability for monitoring signal patterns such as camshaft signal, crankshaft signal, injector signal, and EGR signal.\n \u003c\/p\u003e\n\n \u003cp\u003e\n For 12V and 24V vehicle battery systems, the V400 supports battery testing with CCA-AH automatic switching. Users can\n check waveform monitoring, starting test, charging test, load test, state of health, state of charge, charging status,\n and internal resistance.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/4f771dda-ae7b-40a9-a9b3-e50c68921495.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 multimeter oscilloscope and 12V 24V car battery test with voltage resistance frequency short open circuit waveform charging starting load SOH SOC\"\u003e\n\n \u003ch2\u003eFuel Injector Test, Component Activation, and Hardware Test\u003c\/h2\u003e\n\n \u003cp\u003e\n The V400 supports fuel injector testing with preset modes, custom mode, and signal simulation. This helps technicians\n evaluate injector separation, injector response, and signal behavior in supported diagnostic scenarios.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Component activation supports different control modes including moment, latch, pulse, and circuit breaker mode. Users can\n test supported radiator fans, wipers, electric windows, relays, motors, pumps, solenoids, and sensor voltage simulation.\n Hardware test functions include display test, keyboard test, LED test, and beep test.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/40130e58-1f53-4454-97f7-ded0ec229efd.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 fuel injector test component activation radiator fan wipers electric windows sensor voltage simulation and hardware test\"\u003e\n\n \u003ch2\u003eLatest Upgrades for Short Circuit Tracking, Trailer Light Testing, and Component Checks\u003c\/h2\u003e\n\n \u003cp\u003e\n The V400 is designed to cover the practical repair problems technicians face every day. It supports application test,\n continuity test, jumper function, short circuit tracking, vehicle component activation, trailer light and connection test,\n component-in-hand activation, damaged ground contact checking, signal circuit testing, and equipment upgrade support.\n \u003c\/p\u003e\n\n \u003cp\u003e\n These functions make the V400 useful for diagnosing blown fuses, open circuits, poor grounds, trailer wiring issues,\n lighting faults, relay problems, accessory failures, signal circuit abnormalities, and intermittent vehicle electrical faults.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/8e1851c8-dc16-4186-8543-d1a47ea45d76.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 latest upgrades application test continuity test jumper function short circuit tracking vehicle component activation trailer light connection test damaged ground contact and signal circuit test\"\u003e\n\n \u003ch2\u003eDesigned for Real Automotive Electrical Problems\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-v400-dark-box\"\u003e\n \u003ch2\u003eCommon Applications\u003c\/h2\u003e\n \u003cul class=\"obdm-v400-list\"\u003e\n \u003cli\u003e\n\u003cstrong\u003eShort and open circuit diagnosis:\u003c\/strong\u003e Track wiring faults, blown-fuse causes, and broken circuit paths.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAC\/DC voltage test:\u003c\/strong\u003e Inspect supported vehicle voltage conditions and electrical circuit behavior.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTrailer light and connection test:\u003c\/strong\u003e Check trailer wiring, rear lights, connectors, and towing-related circuits.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRelay and fuse test:\u003c\/strong\u003e Verify relay operation, fuse supply, and power delivery conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFuel injector test:\u003c\/strong\u003e Check injector response, signal simulation, and separation test modes.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComponent activation:\u003c\/strong\u003e Activate supported fans, wipers, windows, lights, motors, pumps, and solenoids.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBattery test:\u003c\/strong\u003e Check 12V \/ 24V battery starting, charging, load, SOH, SOC, and internal resistance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOscilloscope signal analysis:\u003c\/strong\u003e Monitor camshaft, crankshaft, injector, EGR, and other supported signals.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eWhat’s in the Box?\u003c\/h2\u003e\n\n \u003cp\u003e\n The V400 comes as a professional kit with the main unit, all-copper alligator clips, extension cable, universal jumpers,\n test probes, Type-C data cable, user manuals, packing list, and a durable blow molding box for storage and transport.\n \u003c\/p\u003e\n\n \u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/d0f9b212-97fd-4109-883d-7772feec4ad5.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\" alt=\"OBDMonster V400 package contents main unit all-copper alligator clips two-way test extension cord 10m cable universal jumpers blow molding box test probe Type-C cable manuals and packing list\"\u003e\n\n \u003ch2\u003eKey Features\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-v400-feature-row\"\u003e\n \u003cdiv class=\"obdm-v400-feature-box\"\u003e\n \u003ch3\u003e7-in-1 Diagnostic Platform\u003c\/h3\u003e\n \u003cp\u003e\n Includes multimeter, oscilloscope, fuel injector test, 12V\/24V battery test, component activation, hardware test, and application test.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-feature-box\"\u003e\n \u003ch3\u003e0–80V DC Test Range\u003c\/h3\u003e\n \u003cp\u003e\n Supports a wide automotive DC test range for professional electrical circuit troubleshooting.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-feature-box\"\u003e\n \u003ch3\u003e180° Screen Rotation\u003c\/h3\u003e\n \u003cp\u003e\n Rotate the display during multimeter operation for easier viewing in tight or awkward repair positions.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-feature-box\"\u003e\n \u003ch3\u003e32.8FT Working Reach\u003c\/h3\u003e\n \u003cp\u003e\n Long cable design helps technicians test front, rear, interior, trailer, and engine bay circuits more easily.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-feature-box\"\u003e\n \u003ch3\u003e30A Crocodile Clips\u003c\/h3\u003e\n \u003cp\u003e\n Upgraded heavy-duty clips provide a stronger battery connection for stable diagnostic work.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-feature-box\"\u003e\n \u003ch3\u003eOscilloscope Mode\u003c\/h3\u003e\n \u003cp\u003e\n Supports waveform-style signal monitoring for sine, square, triangular, sawtooth, camshaft, crankshaft, injector, and EGR signals.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-feature-box\"\u003e\n \u003ch3\u003eTrailer Relay Fuse Test\u003c\/h3\u003e\n \u003cp\u003e\n Helps inspect trailer light connections, relays, fuses, wiring faults, and towing-related electrical circuits.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-feature-box\"\u003e\n \u003ch3\u003eMulti-Language \u0026amp; Upgradeable\u003c\/h3\u003e\n \u003cp\u003e\n Supports 11 languages and Type-C USB upgradeability for international and long-term use.\n \u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n \u003cdiv class=\"obdm-v400-table-wrap\"\u003e\n \u003ctable class=\"obdm-v400-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eProduct Name\u003c\/td\u003e\n \u003ctd\u003eOBDMonster V400 12-24V Electrical Short Open Breaker Circuit Finder\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTool Type\u003c\/td\u003e\n \u003ctd\u003ePower circuit tester, circuit finder, multimeter, oscilloscope, component activation tool, trailer relay fuse tester\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTest Voltage Range\u003c\/td\u003e\n \u003ctd\u003e0–80V DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n \u003ctd\u003e6–32V DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVehicle System Support\u003c\/td\u003e\n \u003ctd\u003eDesigned for 12V \/ 24V automotive electrical systems\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDisplay\u003c\/td\u003e\n \u003ctd\u003e320×240 TFT large display with 180° screen rotation support\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCable Length\u003c\/td\u003e\n \u003ctd\u003e32.8FT working reach \/ 10m extended cable kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eClips\u003c\/td\u003e\n \u003ctd\u003eUpgraded 30A crocodile clips \/ all-copper alligator clips\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMain Functions\u003c\/td\u003e\n \u003ctd\u003eMultimeter, oscilloscope, fuel injector test, car battery test, component activation, hardware test, application test\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBattery Test\u003c\/td\u003e\n \u003ctd\u003e12V \/ 24V car battery test with CCA-AH automatic switching, starting test, charging test, load test, SOH, SOC, internal resistance\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSignal Test\u003c\/td\u003e\n \u003ctd\u003eFrequency, duty cycle, waveform monitor, camshaft signal, crankshaft signal, injector signal, EGR signal\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplication Tests\u003c\/td\u003e\n \u003ctd\u003eContinuity test, jumper function, short circuit tracking, trailer light connection test, component activation, ground contact check, signal circuit test\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eLanguage Support\u003c\/td\u003e\n \u003ctd\u003e11 languages including English, French, Polish, Czech, Italian, German, Portuguese, Russian, Japanese, Chinese Simplified and Traditional\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eUpgrade Port\u003c\/td\u003e\n \u003ctd\u003eType-C USB upgrade interface\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePackage\u003c\/td\u003e\n \u003ctd\u003eMain unit, all-copper alligator clips, two-way test extension cord, 10m extended cable, universal jumpers, blow molding box, all-copper test probe, Type-C data cable, user manuals, packing list\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eWho Should Use the OBDMonster V400?\u003c\/h2\u003e\n\n \u003cp\u003e\n The V400 is designed for users who need more than a basic circuit tester. It is suitable for professional auto repair,\n electrical diagnostics, trailer service, fleet maintenance, vehicle accessory troubleshooting, fuel injector testing,\n relay and fuse diagnosis, and advanced automotive electrical work.\n \u003c\/p\u003e\n\n \u003cul class=\"obdm-v400-list\"\u003e\n \u003cli\u003eProfessional auto repair shops\u003c\/li\u003e\n \u003cli\u003eAutomotive electrical diagnostic technicians\u003c\/li\u003e\n \u003cli\u003eMobile mechanics\u003c\/li\u003e\n \u003cli\u003eFleet maintenance teams\u003c\/li\u003e\n \u003cli\u003eTrailer and RV service technicians\u003c\/li\u003e\n \u003cli\u003eFuel injector and electrical system diagnostic users\u003c\/li\u003e\n \u003cli\u003eMotorcycle, boat, truck, and equipment maintenance users\u003c\/li\u003e\n \u003cli\u003eAdvanced DIY users and automotive enthusiasts\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"obdm-v400-note\"\u003e\n \u003cstrong\u003eSafety Note:\u003c\/strong\u003e Always follow proper automotive electrical testing procedures. Component activation should\n only be performed on circuits and components designed for direct testing. Do not apply power to sensitive control modules,\n communication lines, airbag circuits, sensors, or circuits unless the service procedure confirms it is safe. Use the correct\n mode and test range before connecting to any circuit.\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-faq\"\u003e\n \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the OBDMonster V400 used for?\u003c\/summary\u003e\n \u003cp\u003e\n The V400 is used for automotive electrical diagnostics, including voltage testing, short\/open circuit tracing,\n multimeter testing, oscilloscope signal analysis, car battery testing, fuel injector testing, relay and fuse testing,\n trailer light testing, component activation, and hardware testing.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eDoes the V400 support 180° screen rotation?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. During multimeter operation, users can long-press the freeze button to rotate the display 180 degrees,\n making the screen easier to read in tight or awkward working positions.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat voltage range does the V400 support?\u003c\/summary\u003e\n \u003cp\u003e\n The V400 supports 0–80V DC test voltage range and 6–32V DC input voltage range, making it suitable for common\n 12V and 24V automotive electrical systems.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan the V400 test car batteries?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V400 supports 12V \/ 24V car battery testing, including waveform monitoring, starting test, charging test,\n load test, state of health, state of charge, charging status, and internal resistance.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan it test fuel injectors?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V400 supports fuel injector testing with preset modes, custom mode, and signal simulation for supported\n diagnostic applications.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eCan it test trailer lights and relays?\u003c\/summary\u003e\n \u003cp\u003e\n Yes. The V400 supports trailer light and connection testing, relay and fuse inspection, and towing-related electrical\n circuit troubleshooting.\n \u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003cdetails\u003e\n \u003csummary\u003eWhat is included in the package?\u003c\/summary\u003e\n \u003cp\u003e\n The kit includes the V400 main unit, all-copper alligator clips, two-way test extension cord, 10m extended cable,\n universal jumpers, blow molding box, all-copper test probe, Type-C data cable, user manuals, and packing list.\n \u003c\/p\u003e\n \u003c\/details\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"obdm-v400-cta\"\u003e\n \u003ch2\u003eOBDMonster V400: Advanced Circuit Testing for Professional Diagnostics\u003c\/h2\u003e\n \u003cp\u003e\n The OBDMonster V400 Power Circuit Tester combines 7-in-1 electrical diagnostics, 0–80V DC testing, 12V\/24V battery\n testing, oscilloscope signal analysis, fuel injector testing, component activation, trailer relay fuse testing,\n 180° screen rotation, built-in light, beep warning, long cable reach, and a professional blow molding box kit.\n It is built for technicians who need faster, deeper, and more confident automotive electrical troubleshooting.\n \u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e","brand":"OBDMonster","offers":[{"title":"Default Title","offer_id":48204863930603,"sku":"CC0200","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/3641\/7003\/files\/1_c3789766-72ec-45ae-b1dc-343cef2efe56.jpg?v=1777973877"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/3641\/7003\/collections\/cc0430.jpg?v=1777870356","url":"https:\/\/obd.monster\/collections\/circuit-tester.oembed","provider":"OBDMonster Online Store","version":"1.0","type":"link"}