... 6core & AV input ~ Main Fuction: video calling & conversation, door gate monitoring, handsfree operation; ~ Systems matching: can be 1 to ... , talking conversation & intercom w/ inside extension door phones, guard centers, Door releasing, monitoring according to signals received such as ... view, and monitorization, auto night IR grasp, Keyless entry, 10.4inch TFT touch screen, 8cord ringer tone Parameter ...