W211 plug-in wireeless doorbell

Advent compact wireless doorbell is a convenient wireless and space-saving solution for alerting you to visitors at  your door. These doorbells we design are small and unobstructive, one doorbell push button can work with unlimited bell receivers, and one doorbell chime can work with max. 4 bell push. See more product features as below:

- Plug-in wireless doorbell with Battery-operated bell push button.       
- Acrylics (PMMA) plate and LED indicator.                                                  
- Operating range up to 150 metres on open air.                          
- 32 sounds selectable on this ring wireless door bell,4 level volume adjustable.
- Self learning feature avoid any interference.
- Transimtter is power by CR2032 battery, receiver is power by dual 110V-220V.

- Easy install: Just plug it in regular sockets, the remote control wireless doorbell is ready to work.

- Expandable: You can expand each receiver with up to 4 additional push buttons or multiple receivers for one button.

- Memory function: If powered off, the doorchime can record the last setting of ringtone and volume automatically.