Contact-Type digital voltage tester

Contact-free electricity test is suitable for a single live wire.

Live: display--U buzzer sounds;

Not charged: display --- the buzzer does not sound;

Shielded wires, two-core, three-core or multi-core composite wires will interfere with each other and cannot be measured.

The NT-320 is designed to comply with applicable national standards, which specify the width and thickness of the voltage tester tip. As a result, it may not fit certain outlet designs or dimensions.