Screwdriver Tester, AC Voltage Tester Pen 12-300V, Voltage Detector, Live/Neutral Wire Tester, with Display, Flashlight, Audible Alarm

DIGITAL VOLTAGE TESTER WITH LCD SCREEN: Contact measurement from 12 to 300V AC. During contact measurement, press and hold the "VOLTAGE" button and the voltage value will be displayed on the screen. This function is only available for contact measurement, not for non-contact measurement. VOLTAGE DETECTOR: In induction mode, the beep frequency increases with the voltage. When high voltage is detected, the screen will display "HI"; otherwise, the screen will display "--U". When no voltage is detected, the screen will display "---". This can be used for phase detection and continuity testing. CONTINUITY TEST & BATTERY POLARITY TEST: Dual indication via screen and audible beep. AUTOMATIC SHUTOFF & FLASHLIGHT: Automatically shuts off after 5 minutes of inactivity to save energy.