- Transmitter Works with self-self-generating electronic doorbell button but not battery. It’s green and energy saving.
- IPX7 certification. Transmitter continually works even in the water.
- Doorbell button life is more than 2000000 times.
- Superb anti-interference performance, and the crosstalk rate is 1:40 million
- Power of receiver is 0.2W.
- In mute mode the led will flash with unique one-key mute function.
- 25 chord ring, and the highest voice is 110 Decibels.