... LCD3,Access control (door release)4,Door answering and monitoring5,Equipped with camera for on-line monitoring6,Video conversation with residents or ... visitor or family member and alarm recording8,Video doorbell and sub- phone connectable9,Multimedia player and videos on demand10 ... ,Home automation (lighting, AC, curtain control over internet,phone, or RF handset)11,Unmanned security (burglar and fire ...