- Not only the product is a doorbell, but also it is a home alarm system.
- 2. DB_A1,A2,A3 support 43Hz detectors, but not support function.
- 3. DB_B1,B2,B3 support 43Hz detectors, also support funtion. The best recommend !!!
- 58ringtones to choose from
- Buttons can be set to diffrent music Used to distinguish different doors
Not only the product is a doorbell, but also it is a home alarm system.
2. DB_A1,A2,A3 support 43Hz detectors, but not support function.
3. DB_B1,B2,B3 support 43Hz detectors, also support funtion. The best recommend !!!
58ringtones to choose from
Buttons can be set to diffrent music Used to distinguish different doors
High-frequency transmission technology, up to100m distance
Step 1: the double-sidedadhesive tape and stick it onthe back of the button, then stick the button on the wall.
Step 2: Plug the doorbell into the socket
