E2 Battery Free Wireless Doorbell Waterproof Doorbell 38 melody ring tones wireless doorbell

Battery- free wireless doorbell first in the world

Tech Intro

Transmitters are used the unique PUSH-RF technology, which is the energy harvesting wireless technology and ultra low power technology. When the button is pressed, it will trigger the micro-generator, the direction of the magnetic circuit in the micro-generator would change. The rapid magnetic flux change leads to an induced voltage, in other words, mechanical energy is converted  into electric energy.

RF-transceiver of the receivers receive the wireless signals, microcontroller identifies the signals.

If the signals are right and the pairing between receiver and transmitter is successful, the music chip in the receivers will be triggered; then the loudspeaker plays beautiful music to tell the host there’s a visitor waiting at the door.

The product is battery- free wireless doorbell with much advantage as follows,

Advantages of self-powered wireless doorbell

1 self powered button.

2 wireless.

3 waterproof transmitter

4 inflame retarding receiver.

5 38 polyphony ring tones in the receiver.

6 100 long range distance in open area

7 endure low and high temperature

8 433MHz

Self-powered button requires no batteries and other external power. Battery - free will do no harm to environment, more environmental, and easier.Products are wireless, which will be convenient to be installed. No cost of wire and manual installation.

The transmitter is waterproof. Soak it in the water for four month, it still works well.

The receiver can be used safely in the house.

The receiver is good in sound quality and makes it pleasant to listen to.

Specification of self-powered wireless doorbell

Pictures of battery- free wireless doorbell