Big Hotel Bell With Access SB  (Large Number) 4S - Landscape
Back Lit, Mifare Proximity Card Reader, Flash Memory Download by USB to Secure software, Door Relay for Lock Control, Bell Touch  Functions: (DND, Clean Room, and Pick Laundry, please wait indicators), Online update to house keeping, and Front office. Disable Bell if DND is active. Bus Enabled Network. Built in Logic Control Module (Host),  Secure, Screw less Fixing, Include 1Z for Door Magnet, No Need for Special Back box (Uses standard 3x3 Market standard Back-box)