... , high-grade acrylic panel, slim designvideo calling, conversation and intercom with inside units, guard station, etcdoor releasing, monitoringIR camera keeps monitoring ... during daytimes and night times also, and keeps records automatcallyMatch with home automation center as 1& 2; 1& 3;Simple ... 140cm ~150cm above from the floor. Newest 7'' crystal touch keyboard TCP/IP video door station phone