Touch Screen Video Door Phone 2-way video intercom arming ... and outside, etc.ZAD615-1CX Specifications:Ultra-thin, and touch screen functionDelicate 7” large HD digital TFT LCD color monitor ... protocol,high-definition color wide-angle cameras,dynamic touch-key, high-grade acrylic panel, slim designvideo calling, conversation and intercom with ... in a TCP/IP system Color Video Door Phone, Touch,