Non-Contact Safety Voltage TesterCan be tested without physical contact. The buzzer and the flashing light will remind at the same time, which increases the safety factor. Isolated operation ensures safe testing. Automatically distinguishes between neutral wire and live wire, and also suitable for disconnection detection of 110V and 220V power systems. 9 levels of sensitivity are available. ] The voltage range is 12-1000 VAC. During use, the probe's NVC sensor automatically detects the voltage intensity. The multimeter activates the corresponding signal strength indicator. Low voltage displayIf the battery voltage is lower than about 2.6V, the current display flashes 3 times, the buzzer beeps and turns off automatically. Please replace the battery. (battery not included) Auto Shut-off & Portable Stylus HookAfter about 3 minutes of inactivity or signal detection, the voltage detector will automatically shut off to extend the life of the battery. battery and save power. With the convenient portable pencil hook, you can easily take it out and take it with you. Entertainment for Cats Exciting lasers move randomly across the floor and walls, attracting attention. natural hunting instinct of cats; press the button to control the laser pointing position.