DollaTek 2Pcs Non Contact Voltage Tester Electrical Detector Pen 90 1000V AC Inductive Electric Digital Multi Meter Volt with Alarm Mode Live/Null Wire Judgment

UV Blacklight Function: Substitute for the UV blacklight flashlight, make this electrical tester be able to authenticate currency, driver license, official identification cards, passports, money Voltage Tester Pen with Flashlight-LED light allows operation even on dark environment; Auto power off after no operation for 5 mins to save energy SAFELY Electrical Tester - Voltage frequency can be distinguished by beep and LED indicator. It's loud enough to hear over moderate machine equipment noise AC Voltage Detector- Power By 2x AA Batteries(Not Include), Distinguish the live and null wire through different frequency alarm sound AND led indicator; Voltage detection range 90-1000V AC Non-Contact Voltage Detector - It will flash and beep when the device close to AC voltage greater during the specified voltage range without touch the measured object, and also with the beep sound and LED to indicate to support enough safety measuring application