This is a UNI-T Digital AC Voltage Detector, a non-contact test pen that offers high sensitivity for electric testing. It has a voltage range of 24-1000V and is battery-powered. Made of composite material, this detector does not include batteries.
The UT12D non-contact AC voltage detectors are commonly utilized for the upkeep of low voltage devices like wires, cables, outlets, and various electrical or electronic tools. This tool is extremely useful for electricians. Features include: automatic power shutoff, buzzer, LED indicators, AC voltage detection, and high/low voltage modes (UT12D).