Autel Powerscan PS100 for automotive electrical circuits. The device solves many electrical system problems, from checking voltage to testing components and locating short circuits. The AVOmeter accurately measures voltage, current and resistance, and the built-in flashlight makes nighttime work easier. It can be used to instantly identify positive, negative and open circuits and instantly check for bad ground contacts, allowing you to quickly locate short circuits. The availability of a 20-foot cable allows access at any distance from the vehicle.