Basic structure of visual intercom doorbell

1. Host

The control core of the visual doorbell system, transmission signal and electric lock control signal are controlled by the host.

2. Extension

The extension is a kind of walkie talkie, which is generally used to talk with the host computer. It is mainly convenient for residents to talk with visitors.

3. Signal converter, video switcher

Signal converter is used for intermediate network equipment that converts signals from non direct networked hosts to networked signals.

4. UPS power supply

Keep the visual intercom doorbell system in the state of charging. When the power is cut off, the UPS power supply will be in the state of supplying power to the system.

5. Decoder

The decoder and protector are used in the bus system, and the decoder function provides addressing for the call signal to connect the indoor unit.

6. Host selector

This device can realize the signal switching function when multiple doorway hosts are working

7. Network aggregator, hub, digital signal converter, optical transceiver

When large cells are connected to the network, the distorted signals can be restored to the greatest extent to meet the long-distance transmission.

8. Door closer

It is a special linkage mechanism for automatic door closing. It has a regulator, which can adjust the acceleration and force. It is convenient and flexible to use.

9. Electric lock

Generally, the internal structure is mainly composed of electromagnetic mechanism. The user can power up the electromagnetic coil by pressing the electric lock key on the extension to control the opening of the door.

The above is the working principle of the visual intercom doorbell arranged by Jiasong Technology for you. For your reference!