, fourth gear volume, 38 chord music.
Easy to install, the doorbell is installed on the outdoor wall, the receiver is plugged into an AC100-240V household power socket.
penetrate 3-4 walls and has a wireless range of up to 150 meters. It is suitable for large houses in open areas, including villas and apartments. Offices, stores, warehouses, etc.
38 chord songs with adjustable fourth gear volume. When sleeping, the doorbell can be muted.
Waterproof, don't worry about extended use in heavy rain.

Specifications:
Item: Wireless Doorbell
Color: White
Material: ABS
Power Consumption: 0.25W
Wireless Frequency: 433MHz
Working Temperature: -10 ℃~45 ℃
Volume: ≥ 50dB/1m
Wireless Distance: 150 meters
Package Size: 10.5*9.5*8cm
Package Weight: 173g

Package List:
1* Doorbell
2* Receiver