12V-1000V Non-Contact LCD Digital Voltage Tester, Multifunctional Pen Tester, AC/DC Voltage Detector, Electrical Continuity Battery Test Pen with Audible Alarm

Non-contact detection: When the electrical test pen detects AC voltage, the screen will display a full red signal, and a beep will sound to alert you.

Sensitivity adjustment: You can adjust the sensitivity to high or low using the "S" button.

The green backlight indicates low sensitivity, while the yellow indicates high sensitivity.

Live/Zero Wire Detection: Insert the stylus tip into the socket to detect a live/zero wire. The red backlight will flash, the LCD will display a full signal, and a beep will sound when a live wire is detected.

Break Point Detection: Move the stylus along the wire; the audible and visual alarm will stop once a break point is reached.

Separation Point Measurement: Safely contact the electrician to check, troubleshoot, maintain, and improve the safety factor of the installation line on-site.