Electronic Music Doorbell For Hotel Guest Room Digital DND Plate System

This electronic music doorbell is powered by AC110V or 220V or DC12V, making a "Ding-Dong" ring sound (or custom ring) when pressing door bell switch, to notify the host that visitor is coming.

The doorbell can work independently, and can also work with hotel room number plate. The door bell switch is on the room number plate.

If the guest do not want to be disturbed, the door bell will be "locked" by pressing "Do Not Disturb" button inside room.