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What is the switcher board in a video door-phones and what is its function? 2

If the monitors are connected with 5 wires, we proceed according to the diagram below.

Choosing an installation location:

The switcher installation location should be chosen in such a way that all monitors in the building are connected to it with a minimum distance.

It is better if the distance between the switcher and the panel does not exceed 10 meters.

If the length of the path is increased, parallel wires should be used.

Wire color coding and troubleshooting:

Wire one (red wire): The function of this wire is to ring the bell, transmit the sound of going back and forth, and open the door.

Wire two (blue wire): It is for connecting to the ground. If this wire is disconnected, the monitor will not function.

Wire three (yellow wire): It is the power source for the door panel.

If this wire is disconnected, only the monitor will ring and it has no other function.

Wire four (white wire): This wire is selected in the gray map and its function is to transmit the image.

If this wire is disconnected, only the video connection will be disconnected and the rest will function correctly.