الوصف

Tech Intro
Transmitters are used the unique PUSH-RF technology, which is the energy harvesting wireless technology and ultra low power technology. When the 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 changed into electric energy.
RF-transceiver of the receivers receive the wireless signals, micro-controller 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 theres a visitor waiting at the door.

Advantages
Our product is battery-free wireless doorbell with many advantages as follows,
1. Self powered .
  It requires no batteries and other external power.
2. Wireless.
  You can use it anywhere as you like.
3. Waterproof transmitter.
  Soak it in the water for four month, it still works well.
4. Inflame retarding receiver.
  Enlarge the safety of your house.
5. *5 polyphony ring tones in the receiver.
  More choice, more happiness.
6. **0m long range distance in open area.
  Powerful signal transmission.
7. Endure low and high temperature.
  It can work even in a sever environment.
8. **3MHz .
  It has stable performance.