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Autel PowerScan PS100 is the best Electrical Tester for reducing diagnostic time in all 6- to 30-volt vehicle electrical systems. After a simple hook-up of the tool to the vehicle's battery, you can ✅Test Voltage & Polarity/ Continuity/Signal Circuit✅Activate Components in Your Hand & in the Vehicle & w/Ground✅Test Trailer Lights and Connections✅Find Bad Ground✅Find Short Circuits✅Red/Green Polarity LED.

【FOUR WORKING MODE---INTUITIVE&EASY】Four working modes make circuit detection more simpleDC Voltage, AC Voltage, Resistance, Tone On/ Off. DC Voltage mode can read DC voltage with 0.1V resolution; AC Voltage can read Max & Min voltage, frequency and duty cycle quickly; Resistance mode can read resistance between tip and auxiliary ground wire. Unique Tone On/Off Design is really useful when working in bright areas, it can judge the circuit voltage according to the volume of the sound.

Autel PS100 Automotive Circuit Tester instantly checks component continuity and identifies positive, negative and open circuits. When the positive terminal is connected, the red LED light is on, accompanied by a beep. When the negative terminal is connected, the green LED is on, along with low pitched tone. If it is an open circuit, the LED light will not light. Besides, sharp stainless steel probe for piercing wires effortlessly, also for hard to reach tight areas.

20FT Cable + 20FT Extension Cable Unlike the power probe, Autel PS100 Automotive Power Circuit Probe Tester comes with 20 feet long cord plus 20 feet extension cord. Combining the feature that it can be powered by the ci*gare.tte li*ghter, and alligator clip for convenient ground connection, you can test electrical circuit system anywhere around the longer vehicles and trailers.

Autel Electrical System Tester can test the state of sensors, quickly and accurately judge the connectivity of circuit via transmitted signal, performing continuity test. Two ways to test continuity ✅1 In resistance mode, if the resistance is 0.0Ω and the LED lights up, it means continuity. ✅2 Power up the connection using the power switch, if the circuit brea-ker tr-ips, that means the resistance is low and there is continuity.