Resolution: 1920 x 1080 ; Camera view angle: 88 ° ; IR illuminator; Doorbell button: 1 pcs ; proximity reader built-in: 13.56 MHz S50 ; RS-485 interface; Alarm inputs: 4 pcs ; Alarm outputs: 2 pcs - Relay (30V DC / 2A) ; Main features: Lock control, Face recognition - Memory of 10000 face templates, 20 000 indexed users, Bidirectional communication, ;