Detect AC Voltage: Helps to distinguish the neutral wireHandy LED flashlight for working in dark environment "Beep" sound, it also gives a warning green light and audible when you test a USB charging socket
Safe and Reliable: A non-contact CAT IV voltage tester with an integrated torch avoids potential shocking experience. Durable and Convenient: Lightweight, durable construction with convenient pocket clip, a perfect handy tool for electricians.