Features 1) 6 built-in burglar alarm zones are designed in the monitor 2) Colorful or black/white system is optional 3) Video/audio indoor phone are compatible, which have intercom function 4) All monitors can call Management Center for help 5) Door camera is optional, enabling you to confirm the visitor for a second time, and conveniently contact the Management Center (MC) in emergencies 6) High-performance 1/3" CCD camera, infrared illumination for easy identification even at 0.1Lux 7) Noctilucent keyboard, modularization designed system, malfunction of any one monitor doesnt affect the whole system 8) Password to unlock the door station, or card sensor to unlock and cancel alarm zone in users house at the door station 9) MC displays the calling number when receiving a call, built-in dialer can easily call any user in the LAN residence quarter, Management Center deposits 30 alarm record details 10) Management software based on Windows platform can save all inlet/outlet records 11) Electronic residential district map displays users location and other information when alarm calling 12) Users can inquire and print all saved calling times, addresses, alarm types and results 13) Management Center can supervise any door station 14) Maximum system capacity: one main MC x 32 accessories, accessory MC x 32 door stations x 400 monitors/handsets. 15) Flush mounted door station 16) No dual communication between door station and monitor