1. IP44-rated waterproof push button simply installs .
2. 15 melodies can be selected by the side button of door bell
3. Remote control distance: 50M ( free area)

1. IP44-rated waterproof push button simply installs .

2. 15 melodies can be selected by the side button of door bell

3. Remote control distance: 50M ( free area)

4. Additional transmitter and receiver is available

5. Transmission frequency: 433.92MHz

6. Receiver: DC 3V ( 1.5V AA x 2) not included

7. Remote control: DC 12V (23A) battery 1pc included