Video door station;Exclusive Touch key design Capacity of up to 10000 ID cards; Finished in luxury aluminium; ID/IC card or Password access control; Waterproof and vandal resistant; Audio assistance; Built-in infrared LED;Night vision keypad; Angle-adjustable camera; 12 polyphonic melodies; Built-in High resolution CCD; Emergency button (SOS) to call the concierge for help; Supports up to 4000 indoor monitors