NAMEO Non-Contact Voltage Tester, 12-1000V AC Voltage Detector with Flashlight Function Professional Non-contact AC Voltage Detector automatically detects AC Voltage from (12-1000V AC) with 2 x 1.5V AAA Batteries Included. Lightweight Design: Durable polycarbonate plastic resin construction with convenient pocket clip. Auto power-off feature conserves and extends battery life, more energy saving and convenient. Add flashlight function: You could use it at dark night as a flashlight at dark environment. Alarm Mode: Sound and LED light Alarmed. Automatically selection of 3 kinds of sensitivity.