Voltage Tester Pen, Professional Non-Contact AC Voltage Detector with Audible and LED Alerts, Compact Electrician's Tool for Testing Wires Under Voltage, Automatic Voltage Adjustment

Rotating battery cover: The battery cover rotates smoothly for quick and hassle-free battery replacement, while the sensitivity ensures accurate AC voltage detection.
Professional non-contact testing: Safely detect AC voltage without direct support, with reliable performance for confident use in various electrical tasks.
Safe and user-friendly design: Designed for professionals and DIYers alike, with a simple and compact pen shape for easy handling and storage.
Live wire detection: Automatically identifies live wires with a clear audible and LED alerts for visual and audible feedback during testing.
Intelligent sensitivity adjustment: Features three automatically selected sensitivity levels (high, medium, and low) and includes an auto-off function for extended battery life.