What are the five buttons on the visual doorbell?

1. Open the key.

2. unlock the lock and press the money.

3. Call the management center (property) key.

The system is mainly composed of host, extension, UPS power supply, electric lock, decoder, protector, video amplifier, signal repeater, signal converter, video switch, host selector, network concentrator, digital signal converter, optical terminal and door closer.

According to the type, it can be divided into direct press, digital, digital home connection, direct press visual intercom, digital visual intercom, digital home connection visual intercom and so on.

Extended data:

Once the door magnets, infrared alarm detectors, smoke detectors, gas alarms and other devices installed at home are connected to the security indoor unit of the visual intercom system, the visual intercom system will be upgraded to a security technology prevention network, which can communicate with the property management center of residential quarters or the doorman of residential quarters by wire or wireless.

Thereby playing the role of security protection such as theft prevention, disaster prevention and gas leakage prevention. , to provide the greatest protection for the owner's life and property safety. It can improve the overall management and service level of housing and create a safe community living environment, so it has gradually become an indispensable supporting equipment for well-off housing.

Baidu encyclopedia-visual doorbell