Kinetic Battery-Free Doorbell

When users press the bell button, energy converting module inside will change the mechanical energy into electric energy. Then the wireless module of the button sends the signals to receiver. The receiver receives the signals and plays music.

Advantage of Kinetic battery-free doorbell

1. Battery-free bell button.

2. No wire, easy installation.

3. Long working range.

4. Multiple melodies and sound levels for your choice.

5. Easy installation

6. Waterproof and anti-sunshine