How video intercom works

Video intercom is a set of xian modernized well-off residential service measures, providing two-way visual communication between visitors and residents, achieving dual recognition of images and voice to increase safety and reliability, while saving a lot of time and improving work efficiency. More importantly, once the door sensor, infrared alarm detector, smoke detector, gas alarm and other equipment installed in the home are connected to the security indoor unit of the video intercom system, the video intercom system will be upgraded As a security technology prevention network, it can communicate with the residential community property management center or community guards by wired or wireless communication, thus playing the role of security protection against theft, disaster, gas leakage, etc. Degree of protection.

working principle

The system can also be connected to emergency alarm buttons, infrared detectors, door magnetic window magnets, smoke detectors, combustible gas detectors and other alarm devices to notify the management center of illegal intrusion, fire alarms, gas leaks, and emergency help in a timely manner. Providing residents with a convenient and safe life, reducing the annoyance of residents being reluctant to be disturbed, is also a manifestation of the grade and identity of the residential community.

Video intercom, alias is building intercom or video doorbell, English name is Video door phone or Video door bell. Introduced from developed countries in the 1990s, it has achieved rapid development in China. From the end of the 1990s to the present, it has been mainly used in commercial residential buildings, and its scale has developed rapidly. When in use, the resident hears the ringtone and accepts the call from the visitor through the host at the doorway downstairs as if answering the visual dialect. At the same time, the visual extension in the resident's home can receive video images through the camera at the host downstairs, and the resident observes the extension The monitoring image on the display screen confirms the identity of the visitor, and finally decides whether to press the unlock button of the indoor extension to open the electronically-controlled door lock connected to the host at the door, allowing visitors to open the door and enter.

Video intercom is an audiovisual communication system between residents and visitors in a residential area. It is the first line of security for illegal intrusion in a residential area. Through the setting of this system, the resident can use the intercom/visual intercom extension at home, and can talk to the visitors through the intercom/visual intercom door host located at the entrance of the unit building and can pass the extension screen Images to identify visitors. When the visitor is confirmed, the owner of the household uses the door lock control key on the extension to open the electronically controlled door lock on the main unit at the entrance of the unit building to allow the visitor to enter; otherwise, all non-unit personnel and strange visitors are no enter.