Winamo Automotive Buzzer Test Light 3-72V 140in

3-72V Automotive Circuit Tester

This buzzer test light checks DC voltage from 3 to 72 volts with a digital LED readout. It suits professional technicians and DIY owners who need quick polarity identification on cars, trucks, motorcycles or boats. The stainless steel probe pierces insulation to reach conductors in tight spaces. A built-in chip protects sensitive vehicle electronics during testing.

Replaces basic incandescent test lights

The digital display and audible buzzer remove guesswork when confirming live circuits or ground paths. Upgrade when you need clear voltage values and positive or negative indication without squinting at a dim bulb. It is not for buyers who want a multimeter with resistance, continuity or current ranges.

Spring cord stretches to 140 inches

The coiled lead extends across the engine bay or under the dash without dragging. Probe guard snaps on to prevent accidental punctures and stays attached during storage. No batteries are required; power comes from the circuit under test. Ensure the alligator clip makes solid contact to avoid false readings.