... for villa,two way intercom and IR camera,can leave message,1 camera to 3 monitor Functions:Two way communication, monitoring, ... Call,intercom with the outdoor station and administrator center,monitor outside,door release Screen2.4 inch TFT-LCDSensitivity-90dBmStandby ... *65*16mmN.W.150g(2)Installation:Available:1 camera & 1 monitor1 camera & 2 monitors1 camera & 3 monitors2 cameras & 1 monitor2 cameras ...