Video Door Phone System for Villa (DH-820)

1)Applies to the villa or single room 2)Support door bell, intercom, video, monitoring and the door releasing function 3)Outdoor camera with the infrared auxiliary 4)support 4 indoor phone parallel connection and inter-call 5)Indoor phone support several chord bell selectable 6)mate with remote controller 7)Connection layout: 4 signal cable and 1 video cable