Visual intecom device in intelligent housing estate

The utility model discloses a visual intercom device in intelligent housing estate, solving the problems that the existing device adopts the separate transmission of the audio, the video, the electric power and the digit signal, etc., so the connecting circuits are superabundant and the circuit sequence is mistakable, and the adjustment and maintenance are very inconvenient. The utility model adopts one coaxial cable to finish the entire signal transmission to reduce the wiring, so the installing and the using are convenient. The structure of the utility model is that the visual intercom device in intelligent housing estate comprises the devices of an indoor machine, an entrance machine and a management machine, etc. The utility model is characterized in that the medium of the communication between these devices and/or the power transmission is only one coaxial cable, and the signal transmission between the indoor machine and the management machine is repeated by the entrance machine. The management machine is connected with a computer.