1. Support multiple doorbell transmitter, suitable for large villa
2. 32 songs optional
3. Waterproof touch doorbell button
4. Doorbell, alarm, welcome alarm all in one
5. Learn 30 accessories (Doorbell transmitter, detector, remote control), without losing number upon power failure
6. 4 levels adjustable volume
7. Waterproof touch doorbell button
1. The button need 1pcs 12V 23A battery, but our products are not include battery.Because battery are dangerous good and the package will be returned by custom easily. The battery can be purchased in platform or locally and the price is very cheap.
2. Please attention that the button can not work alone,it need to work with the doorbell receiver, so our kit 1(1 button) not support to work alone.