- 1. Power supply mode: No battery is needed, just plug the receiver into the socket to generate power by pressing. Press your finger gently, and the mechanical energy will be converted into electrical energy
- 2. Multi function: Not only doorbell, but also your safety steward. It can be hung around your neck and become a portable pager
- 3. Waterproof grade: IP44 dustproof and waterproof, outdoor installation, safe and durable
- 4. Transmission distance: Open space 150m, indoor 30m, long-distance transmission, strong penetration
- 5. RF frequency: The frequency of wireless doorbell is 433MHz, with 38 music ringtones, which can be switched at will
