Hand Free Video intercom communication Supports monitoring the door station and the external camera Ideal product for home security with added features like Hand Free Visitor calling Video Intercom Unlock Monitor options CP PLUS Video door phone is inbuilt with Nano glass camera with aluminium alloy panel enabled with IR Color Camera Night Vision with feather touch keypads Convenient installation and easy operation with Weather Vandal proof Outdoor Unit CP PLUS Video Door phone comes with 7 inch Color TFT LCD Display 4 wires System is very Easy for installation