Detailed Product Description This is a doorbell system customized for hotels, which consists of 4 functions: Bell, DND( do not disturbe), MUR( Make up), Wait. The panel with DND, MUR, BELL,WAIT will be installed outside wall of the room, panel with DND, MUR and panel with WAIT will be installed inside wall of the room. We can supply the doorbell system in same finish with hotel card lock, so as ...