A practical scheme for connecting a video formophone Consider on the example of the most common two-channel model Commax DPV-4MTN. You can attribute to its advantages to connect two call panels simultaneously.
Connection diagram two-channel intercom
The design may contain either screw clamps or, as in the last models - plug connections. And in that, and in another case, 4 contacts suggest the following connections: audio channels - to first, meals - to the second and third, video signal - to the fourth contact. Please note that such a model allows the control of the electric pump.
In practice, it looks like this: the visitor clicks the button on the call panel, you see it, talk and pressing the corresponding button on the intercom opens the electromask. Such intercoms are often installed in apartment buildings to control the electric boot in the door of the entrance or tambour. Dual-channel intercoms are particularly popular among the owners of private houses, as they allow you to connect two electrics at once, for example, on a gate and on the entrance door directly to the house. If you do not plan to control electromechanical locks at all with the intercom, then both wires in the call panel, intended for this purpose, you just need to isolate.
Connection diagram of intercom with camera
The presence of two channels in the intercom assumes other variations of connections. For example, you can connect the camcorder instead of the second call panel. In this case, only a video channel is connected, the total and +12 V, and the audio channel is not used. According to this connection scheme by clicking on the Intercom button, you can communicate with the visitor through the tube. When you press the button again, the second channel is selected, and you see the image.
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It is quite admissible to connect anything at all to the second channel. In this case, everything is very simple: the visitor took advantage of the calling panel, you talked to him and by clicking on the necessary button, opened the castle and allowed the guest. However, if you prevent such simple requirements to the intercom, it is better to initially purchase a simple single-channel model.
Diagram of connecting two intercoms in parallel
There are situations in which more comfort will provide a parallel connection of two intercoms at once. As a rule, such a connection scheme is chosen for themselves owners of private two-storey houses, setting on the intercom on each floor. The advantage of this choice is the ability to control both call panels from any of the intercoms. It doesn't matter on what floor you will find a visitor's call. In any case, you can speak with him and alternately open the electric clutch, and after the guest clicks on the button of the call panel at the entrance to the house, open and the second lock.
How to connect an intercom? Video
Now you know how to connect the intercom to the most convenient to use them.