Battery – Less wireless doorbell

1. The transmitter signal transmits three sets of signals in a single pass, which can penetrate multiple layers of walls, and the transmission distance of the relay function is doubled. The maximum transmission distance is about 300 meters.

2. Built-in code system, you can increase or decrease the transmitter/receiver as needed, and easily realize more than one drag and more operations.

3. Kinetic energy self-generating technology, pressing kinetic energy to generate electric energy, driving circuit to emit signals, realizing self-power supply.

4. Selected high-quality electrical materials, 200,000 compression tests, service life of up to 30 years.