🔌 Easily detect electrical switch status with this LED tester! When the electric pen touches the contact rod, a green LED lights up if the wire’s inner core is intact. If not, the LED stays off, indicating poor contact.
💡 Quickly identify line breaks by moving along the wire: a glowing green LED means a smooth line, while no light signals a break.
- Smart sensor chip ensures safe and sensitive detection
- Supports zero line detection, on-off detection, and DC self-check functions
- High brightness LED for clear indication
- Compact and portable design for easy carry and storage
- Simple operation with clear LED indicators for immediate results
- Includes convenient card packaging
âš¡ Perfect for electricians and DIY enthusiasts who need reliable voltage status at a glance!
