Two AAA batteries.
This rugged, pocket-size voltage detector offers noncontact detection of AC voltage from 50 to 600 V (50/60 Hz). When live wires are detected, a red LED illuminates and audible alarm sounds. Simply place the tip of the detector into AC outlets or against wire insulation testing for quick and safe notification of voltage presence. The voltage detector offers Cat IV-600 V category safety rating and features a convenient built-in pocket clip. It is ideal for troubleshooting electrical wiring, appliances, automotive repair, and electronic devices.
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