Visual building intercom is a kind of equipment that plays a role in building communication, also known as visual doorbell. Generally speaking, visual building intercom refers to your doorbell system. We often say that visual building intercom, visual doorbell, visual intercom, intercom doorbell and other words are the same meaning, that is, a set of visitor intercom management system (a set of humanized management visitor operating system including software, hardware and after-sales service).

1. The system capacity of residential areas in China is small, hundreds of households, large, thousands of households, and mainly buildings, which is unimaginable in western countries with relatively small population density. Therefore, the capacity of foreign intercom system is far less than ours.

2. Environmental requirements, our country's current development of the community can only be regarded as rough housing, the vast majority of families have to be redecorated after purchase, the decoration of each household will cause certain damage to the system, and the period of the entire residential area may be as long as several years. In view of this situation, the domestic powerful companies put the anti 

breaking and anti-interference in the first place when designing the system.

3. The compatibility of the system, due to the different requirements of the residents, some of the households in the same unit may be installed with visual devices, some of the requirements are installed with non visual devices, some of the requirements do not need to be connected with the Internet at present, but in the future, etc., all of these put forward high requirements for the system compatibility.

Through the setting of the building intercom system, the residents can use the intercom / visual intercom extension at home, and can communicate with the visitors through the intercom / visual intercom host at the door of the unit building, and can identify the visitors through the image on the extension screen. When the visitor is confirmed, the owner of the house uses the door lock control key on the extension to open the electric control door lock on the main unit at the door of the unit building to allow the visitor to enter; otherwise, all non unit building personnel and strangers cannot enter.