As it may seem, controlling the light is not so difficult. All that is needed is to connect a switch with a lighting load to the network. And perfect order! A more difficult task is to control the lighting in the room from two places at once. But this problem can also be solved if single pass-through switches are used. So what exactly are they?
First of all, they differ from simple switches, in which a quite ordinary interruption of the electronic circuit occurs in that three contacts are built into the walk-through switches at once, and there is a mechanism for switching between them.
Their main advantage is that the walk-through switches provide the ability to turn off or turn on not only one lamp, but also a whole group of lighting fixtures from two points (or more) of the living space. Often these devices are popularly called toggle or backup switches.
In fact, there are not so few places for using this device, but you need to know thoroughly how to connect a pass-through switch. For example, you can install it in a hall with a large area - you canwill on the one hand, at the entrance, turn on the light, on the other hand, at the exit, turn off. After you have climbed the stairs, there will always be an option to turn off the lights on it. A walk-through switch can provide similar convenience and comfort. Such a scheme is able to work not only with lighting, but also with other electrical appliances.
However, even at the stage of building a house or during the renovation of an apartment, it is necessary to decide exactly where the pass-through switches will be located so that it is possible to lay electrical wiring for them with high quality. This is due to the fact that once construction/repair work is completed, this will not be so easy to do, as another additional cable will be required.
In order to prevent confusion, it is worth understanding exactly what the difference is between two-pole and single-pole switches. In bipolar switches, two conductors are closed / disconnected simultaneously - zero and phase, and in single-pole switches - only one. Two-pole feed-through switches are mainly used to turn off complex devices that may require increased electrical safety, for example, electric heating boilers.
It should also be noted that such switches can have more than two keys.
Since this article is about switches, it is useful to know that there are devices that can be used to simultaneously control the light and, toFor example, a fan located in the kitchen. Since the kitchen fan continues to run when the lights go out, you can always set the time and it will turn itself off. Such devices have a specific name - timers. They can be of several types: for installation directly under the switch in a mounting box, for installation in a cabinet. In any case, you need to make sure that the selected equipment is fully suitable for your premises.
