4 Accurate Diagnostic Modes Test Fast The automotive circuit tester features 4 precise modes to cut diagnostic time: DC Voltage Mode ( 0.1V precision, reads live circuit voltage) AC Voltage Mode (gets Min/Max voltage, duty cycle, frequency quickly) Resistance Mode (checks grounds, circuits, measures resistance between probe tip & auxiliary ground) Diode Test Mode (Evaluates diode functionality bymeasuring forward voltage and checkingif it conducts properly. ). No complex calibrationperfect for quick fault locating, whether youre in the garage, driveway, or roadside.
Instant Component Activation (On/Off-Board) Test Integrity in Seconds This power circuit probe has a built-in activator: flip the switch (hold to activate) to fire up signals for components like blower motors, power window motors, windshield wipers, rear window defrosters, headlights, radiator fans, fuel injectors, relays, and startersno jumper wires! Test components in hand/vehicle/with ground to check if theyre in tip-top shape, deliveringhigh accuracy for 12V/24V systems.
Dual Power Supply (Battery/Cigarette Lighter) Plug-and-Play Convenience The car circuit tester is plug-and-play, drawing power from either your vehicles battery (via insulated alligator clips) or cigarette lighterno external battery needed for main modes. The insulated alligator clip ensures a secure ground, eliminating the hassle of hunting for perfect grounding spots. Whether youre testing a compact car or massive truck, it works reliably in most scenarios.
Dual-Way Continuity Test + Sensor Signal Detection The electrical system probe tester performs continuity tests in 2 ways: Resistance Mode ( 0.0 + LED light = continuity) Power Switch Mode (circuit breaker trips = low resistance/continuity). It also tests sensor states, transmits signals to judge circuit connectivity accurately, solving sensor-related electrical issues efficientlymeets the needs of professional car machinists.