What is the difference between switch and switch or how to control lighting from several places. Differences from cross-switches Connecting a cross switch

Switch and switch are electrical devices that are intended to perform similar functions. At the same time, these devices have fundamental differences from each other.

What is a switch

Switch is designed for electric chain interrupts. With it, controlling lighting devices. Such products operate in switching on and off mode. Accordingly, they perform two functions - turning on the illumination or electrical appliance and shutdown. The simplest example of the product is the switch with one key, which can be found in any room, which is illuminated by electrical lighting devices.
Product closes the electrical chain and is a medium to control lighting.

What is a switch

Such devices are used for electric circuit contact switching. Their work is expressed in the transfer of contacts and the creation of a new electrical circuit. In its appearance, the switch has a large similarity with the switch. However, these devices have a different number of contacts.

Thus, the standard switch has three contacts, and the switch - six. In the on position, the device closes the first, as well as the second contacts. And when transferring to position is turned off, the third and first contacts are closed. Thus, it is possible to talk about the off position very conditionally. The switch is constantly in the on state.

Differences

These devices differ in the principle of work, so they are used in different situations. Among the most characteristic features of switches and switches, it is necessary to highlight the following:

The switch is characterized by the presence total two contacts. Its work is expressed in the compound and disconnection of the electrical circuit. Thus, the light is turned on and off. Meanwhile, the switch has wider capabilities. It is capable of connecting, disconnect the electrical circuit, that is, perform the function of the switch. But in addition, the switch can also create a new electrical circuit. This is achieved due to the presence of three contacts.
The switch is installed in the appropriate rooms and are used to turn on or off the lighting devices that are in the same room. In this case, using the switches can be controlled by the same lighting device from several places. As an example, you can cite the control of lamps in the corridor. When entering the corridor, you can turn on the light using the switch. And passing on it and being at the end of the corridor, it will be possible to turn off the light using another switch.
In order to be able to enable or disable lighting of three and even more different points, the so-called control switches. In this case, closer to the beginning and by the end of the electrical circuit should be mounted on one single-wave switch. And already between them you can install any number of transition switches.

Thus, the switch is more functional product. It is great in cases where quite a large space is illuminated. It can be an extended corridor or several staircase spans. Thanks to the capabilities of the switches, control the operation of the lighting devices throughout the electrical circuit can be from any place.

At the same time, such places can determine the customer itself, when carrying out electrical work. That is, it will be possible to create a simple, reliable and comfortable system of controlling the lighting devices. In this case, the fundamental difference of switches and switches is precisely the number of contacts. This value determines the wider useful features of the switches.

What similarity is

Despite serious differences, these devices have a lot and general features. Among them, you should specify the main:

They are designed to control lighting and electrical appliances.
These products have several species. They can be mounted indoors and on the street.
There are models having moisture-proof enclosures. It is they are intended for street installation, since adapted to various weather phenomena.

Thus, the switch has a more complex design and more useful features than a switch. At the same time, they are not inferior to switches in strength and designer performance.

Switches: what are there

One of the most familiar to each of us actions is to turn on and off the light. I went to the room, clicked the switch, went out - clicked. We do it constantly when we are indoors. That is why the question of choosing switches is one of the most important in the process of repair and apartment repairs. When a person begins to pick up switches, from the abundance of titles, it begins to be lost: what is a transition switch than it differs from the usual, why the backlight switch? What is a dimmer? .. Detailed technical descriptions with the lifting schemes of the electrical circuit device generate even more questions and boredom. Therefore, let's try to understand all this, without resorting to the professional knowledge of electricians and definitions from reference books (because we are the main principle and appointment to understand, and let specially trained people are engaged in the technical side!).

Variety of switches

Material and device properties

The switch is regularly exposed to external influence, so it is necessary that it be made from the corresponding material. Basically switches are made of heat-resistant and shockproof plastic. If we talk about the calipers of instruments, they can be both metal and plastic. The latter are found in two series: Legrand Etika and Schneider Electric Odace. Plastic calipers, by the way, no worse than metallic - they are made of durable polycarbonate plastic. A significant difference between switches with plastic and metal calipers is the price: the first cheaper.

There is also a special category of moisture-proof switches, which are made of moisture-resistant reliable polymers protecting the mechanism from moisture. Such switches must be considered if the device will be indoors with high humidity (bathroom, production room) or on the street. That is why the characteristics of some goods give an abbreviation "IP44" or "IP54", which means the degree of protection of the device from the penetration of dust and water - Ingress Protection Rating. Such devices are in series QUTEO from Legrand, Hermes IP54 from IEK (for installation in the apartment); Palmiye from Viko, Plexo from Legrand (for installation on the street).

Type of protection	Description
IP44.	The design does not include objects with a diameter of more than 1 mm. The design is protected from water splashes that can be directed to the product from any direction.
IP55	Dust can penetrate the housing in minor quantities. Full protection against touching the current parts of the equipment. Water jets, for example, the hose does not harm the equipment placed in the case.
IP56.	Dust can penetrate the housing in minor quantities. Full protection against touching the current parts of the equipment. Bay of equipment with water does not cause damage to the equipment.

Waterproof switches

Speaking about switches, it is impossible not to mention the framework that cover the device mechanism and are an important component of its appearance. The material can be organic (wood, glass), from it usually make a framework. Such frames are beautiful and pleasant to the touch, but the price of them is quite high. Frames made of wood can be found in the Schneider Electric Unica Top, ABB Zenit, Legrand Celiane, Gira System 55. There are also framework made of glass (Gira System 55, ABB Zenit, Schneider Electric Unica), metal (Gira Edelstahl, ABB Zenit). There are also very exotic materials - for example, a frame from a natural slate from ABB.

Appearance and functionality

Some features of the external execution of switches (and switches) affect their capabilities, which is important to consider when choosing. The devices can be keys, touch, with cord. Also, when you select the device, it is necessary to decide whether you need a backlight in it.

1. Keyboard switches.

Keyboard switches can be classified, twinlavny and three-block. The number of key depends on the number of light sources. For example, two-block and three-block switches are convenient if there are basic and decorative lights: you can alternately include both types of lighting or choose some one, saving electricity. Thus, multiclave switches are a compact and practical light control device. Coloring and two-block switches are presented with almost every manufacturer, three-block can be found in the series, Etika from Legrand, Glossa from Schneider Electric, E22 and System 55 from Gira.

2. Light indication

The presence of backlight significantly reduces the search for the switch in the dark. The backlit option has almost all keyboards and some pushbutton switches. The backlight also performs aesthetic function: for example, the Celiane series silent switches from Legrand are equipped with a ring backlight.

3. Rope (cord) Switches

Such a type of switches is controlled by the cord or chain located in the case. Rope switches often acquire from aesthetic considerations, to comply with a certain style in the interior. Also, switches with a cord can be convenient in a practical plan: to use them there is no need to touch the wall in searching the switch, it is enough to pull the lace. But at the same time, it is necessary to relate to such a switch gently - a sufficiently small force to a slight click so that the mechanism gets into the desired position. The cord switches are in the LEGRAND Valena and Legrand Mosaic series from Legrand, Unica from Schneider Electric.

4. Sensory switches

Technologies are inexorably go ahead, and therefore it is becoming more easily to drive the light - now it can be done with touch without any effort. The touch switches look modern and very comfortable, but at the same time are quite expensive.

Celiane Legrand Touch Switches (Colors: Titanium, Ivory, White)

5. Dimmers

Dimmer is a light regulator that allows you to control the brightness of the lighting. The essential advantage of this device is that it saves electricity. Dimmers can be the following types:

swivel - brightness depends on the angle of rotation (there is in the seriesSedna, Unica, Odace, Glossa from SCNHeider Electric, System 55 from Gira);
rotate-push - in addition to rotation to adjust the brightness, you can click on the dimmer to turn on / off light, while the device will remember the last set brightness level (there is in the seriesSystem 55 from Gira);
push - adjustment of brightness is performed by pressing the +/- key (there is a seriesValena, Etika and Celiane from Legrand);
touch - control brightness is carried out through light touch (there is in the seriesSystem 55 from Gira).

Switches and switches - what is the difference?

They have one function - turn on and off the light. Externally, the switches and switches are also not particularly distinguished. The difference lies in the fact that the switch has two contacts, and the switch is three. Unlike the switch, when you click on which the electrical circuit is interrupted, when you press the switch key, switching is switched from one to another contact. The chain is not interrupted, but a new one is created. It is this feature that allows you to use switches to control light from different points. For example, you use the switch, if you use the same device to turn on / off with light in the room, which is located there. And if you go into the room, turn on the light, go to the corridor and turn off the light already out of the corridor, - in this case, you use the switch.

Switches: Pass and Cross

The passing switches are used only in a pair, allowing you to control the light of two places. As the name follows, this type of switch should be placed in the aisles. So, the use of passing switches is relevant to control the lighting of staircases: you can turn on the light, while at the bottom of the stairs, and then turn it off, rising. The passage switches are conveniently use in long corridors, and in the passing rooms, so as not to return each time to turn off and include light.

Cross (or intermediate) switches are used complete with passage. They are needed to control the lighting of three places. You can control the light in the corridor at both ends with the help of two passing switches, but the corridor can also be a door leading to another room (for example, to the kitchen), when you exit from which it may also be necessary to turn on / off the light in the corridor. Then the cross switches will be needed, which will allow control of lighting from different places.

Thus, during the arrangement of the room, both switches and switches can be appropriated. (Devices of both types can be found in each series presented on the sitemanufacturers.)

Installing devices: Outdoor or hidden

An important factor when selecting switches and switches is the type of indoor wiring. The wiring is either an open (outdoor), or hidden, respectively, which are selected devices - for open or for hidden editing. Open wiring is laid on the walls, ceilings and other designs open, not within them. This type of wiring is most often found in wooden houses and various industrial premises, for apartments usually need switches and switches for hidden mounting.

Open wiring and hidden wiring

Switches for outdoor installation are presented in seriesPlexo from Legrand, Rondo or Hit from Schneider Electric, Hermes IP54 from IEK.

To the question of choosing

Our site presents a huge variety of different products, but that they do not get confused, we have prepared a small overview of key manufacturers and their series.

Legrand is a leading manufacturer of electrician products, which is present as expensive design series (Celiane, Galea Life) and popular-budget high quality (Valena, Etika). Each series products are made and gather in Portugal, Hungary and France. The Valena series is the most popular in the Legrand line, primarily due to the optimal value for money. A more affordable price offers a series of ETIKA, the cost of which is lower due to plastic calipers. Celiane and Galea Life, as mentioned above, designer and prestigious series from the French manufacturer who combine high quality, exquisite design and the corresponding price. Also in Celiane, you can find sensory switches and sensory dimmers.


Legrand Valena.	Legrand etika.


ODACE series from Schneider Electric	Celiane. from Legrand.	Niessen Zenit. from abb.

From Legrand. the other French company does not lag behindSchneider Electric which also offers a considerable choice. ProductsSchneider Electric produced in France, Portugal and India. The Glossa series, which falls into the average price segment, presents inexpensive products of switches and sockets, distinguished by a classic universal design with smooth lines. SEDNA and UNICA series are a little more expensive, but also choose in them. So, in the seriesUnica. presented an extended color range of frames for switches. ODACE SERIES, despite plastic calipers, is the most expensive in the ruler.Schneider Electric Due to the design, it can be compared withCeliane from Legrand.

Schneider Electric Glossa.

Schneider Electric Unica.

In general, when selecting switches, it should be borne in mind that there are "universal" positions that can be found from all manufacturers (for example, single / two-vector switches, with the presence or absence of backlighting), and there are those that can be found only in certain series. This largely depends on the prestigidity and design component of the brand. This can include the manufacturer Gira, some Legrand series, ABB, Schneider Electric. For example, a seriesNiessen Zenit from ABB Represents products from rare and natural materials (frames of slate, glass, wood), switches of this series have strict and futuristic contours.

The most inexpensive manufacturers include the Chinese manufacturer of IEK, presented in our two series - a series of quarters for hidden installation and a series of Hermes for outdoor installation. The feature of the Hermes series is that its products are waterproof with IP54. Budget manufacturers also include the Turkish company LEZARD, which has three series in its lineup: NATA and Demet for open installation and Mira for hidden. The last series has the most extensive color palette. Among its goods there are not only switches and sockets, but also dimmers.

Very often we meet with misunderstanding buyers, in contrast to switches from switches. It is also not entirely clear that these are for such passage, intermediate and cross switches and switches to "two directions".

Let's deal with what the difference between these devices.

We will try to write a language accessible to everyone, so we ask you to not find fault in writing, terms, etc.

Switch

The switch is a device that usually having two contacts that connects the contacts in the onboard state (turns on the lamp), and in the off state, respectively, disconnects the contacts (turns off the lamp). Everything is very obvious and understandable here. What is the white switch of the article Valena series (Valen) on the reverse side is shown in the photo on the right.

Usually manufacturers arroges indicate where any contacts. The arrows are shown that the "phase" conductor must be connected to the "input" (this is an arrow indicating the switch to the switch) of the switch, and the conductor running to the load (that is, the light bulb) to the "output" (the arrow indicates the direction from the center of the switch). "Why should the switch be connected? He will work if you connect it on the contrary! " - you ask. That's right, it will work so, and so, but there are two nuances:

In properly mounted switches, the key occupies the "Up" position in the on, and the "Down" position is turned off. When connected according to the diagram, if the phase conductor is connected to the "output" of the switch, and the "load" to the input, the switch key will always be "turned over". That is, in the key, the key will occupy the "Down" position, and should take the "up" position, and vice versa.
When connected according to the scheme "Phase" -\u003e Load (Lamp) -\u003e Switch -\u003e "Zero"The phase will first pass through the lamp, and burst on the switch (i.e., in the disabled state of the switch, the lamp will always be under voltage). And it is wrong! With the correct connection scheme, the "phase" is broken off on the switch and the voltage on the lamp will not (i.e., when you change the burned lamp, you will not hit the current).

Figure 1. Switch connection circuit.

There are two pole switches that take out not only the phase wire, and also zero (neutral) conductor, but they are usually used only in specific cases.

Switch

Switch is a device having three contacts (or more). In the "included state", the first and second contacts closes, and the first and third contacts are closed in the "off state". In fact, the switch is constantly in the included state - either in one or other.

Hence the name "Switch" - switches from one contact to another. If the switch has only two contacts, it will work as a switch.

In their directories, Legrand applies the concept of "switch into two directions" - so it is, because the switch switches between two contacts. In general, the switch can switch between three and more contacts, but in electrical installation mechanisms, if such, it is extremely rare, therefore no one clarifies how many directions switches switch. Frequently, the switches are called "passing switches", but this concept, in our opinion, is not impossible and applied to it.

One of the most popular applications of the switch is. To control the light, only two switches will be required, and to control the lighting from three or more locations can not do without the use of pass-in (cross) switches.

Figure 2. Switch connection circuit.

Switches in our catalog:

Internal installation - in series: Celiane, Valena, Cariva, Mosaic.
Wall-mounted - in series: QUTEO, OTEO.
Waterproof - in series: QUTEO, PLEXO.

Control switch

The intermediate (it is the same cross) switch - a device that switches two separate lines of the nearest (i.e., if the phase cross switch was on the right, and the zero on the left, then when switching, they will be changed in places). The appearance of intermediate switches is no different from ordinary switches. For clarity, see the schemes in the drawings.

The intermediate switch is typically used for.

This switch is called "Cross", because when switching, as it crosses the line, and the "intermediate" is called for the fact that it is in the inclusion circuit when controlling from three or more places is between "switches into two directions".

Figure 3. Schemes of the passage of the passage switch.

Elektro - online electrician store in Irkutsk www.Syt

Sometimes there is a need to manage light from different places of the same room. Such a need is particularly relevant in long corridors, on the staircases, in the basements, in large rooms.

To be able to independently turn on and disconnecting the lighting devices from several points, you will need passage and cross-switches. A pair of passage devices will provide the ability to control two remote points, and the cross switch will allow you to turn on and off the light from three or more places.

Principle of operation

Below is a diagram of connecting intermediate switches, providing independent turning on and off the light from two different places.

Zero is connected directly to the lighting device, the phase is connected through a couple of switches, combined with a two-tier conductor. With two PV1 and PV2 switches, the first and third contacts are closed, as a result, the circuit is closed, and electricity comes into the lamp.

To open the chain, press the button of any switch, for example, PV1. As a result, the first and second contacts will be closed. When you press the PV2 switch button, the same thing happens. Thus, we obtain the lighting system, independently manageable from different points.

Functions of the Cross Switch

To create a set of points of control of the capabilities of passing switches is not enough. It will be needed to enable cross-switch in the connection circuit. The switch includes a two-tier conductor to break - between the passing devices.

The connection circuit of two passage switches and one cross is shown in the figure below.

All contacts are in a closed state. The current flows through the wiring (listed in red). When you click on the button of any of the three switches, the chain is opened. Pressing the key of another device leads to a circuit of the chain and flow of electricity through blue wires.

For four control points, the diagram shown in the figure below is used. The scheme involves two passing and two cross-switches.

Not only keys, but also motion sensors or cotton are suitable for light control. However, such devices, with all their convenience, the disadvantages are not deprived of:

high prices;
not too high reliability;
false responses.

Varieties of switches

There are two types of cross-switches: keyboards and swivels.

Keyboards

The devices of this type are most common. Switches break one chain and closure another. Standard devices work with only one chain.

Externally, different types of switches are characterized by such signs:

single crust switch has 2 contacts;
passage - 3 contacts;
cross - 4 contacts.

Devices are equipped with one, two or three keys. Three-vector and two-lying cross switches are used to independently control multiple chains.

Swivel cross

Switches of this variety are not so widespread. They are used to control light in manufacturing and warehouse buildings, to organize street lighting. Less often rotary cross devices are used in residential premises. Circuit and opening contacts are carried out by moving the lever.

Overhead and built-in

By the installation method, the switches are made to divide into two types - built-in and overhead. Built-in models are installed at the construction stage or in the process of replacing the box parts. Conductors are paved in wall channels or fix on the walls. After that, the wires are covered with a layer of plaster or other finishing material.

Overhead devices are fixed on the wall. In special channels in this case there is no need. The overhead switches are not too convenient, as they are subject to contamination. However, the overhead models fit well into modern interiors.

Characteristics of cross-devices

The sale presents a wide range of electrical devices for light management - both Russian and foreign companies. The differences between the switches of different manufacturers mainly consist in pricing policies.

As an example, we give the technical details of the double cross switch:

Voltage - 220 volts.
Current strength - 10 amps.
Construction materials - polycarbonate, plastic, thermoplastic.
The protection class differs depending on the model. Some devices are equipped with a high level of protection against humidity.

Installation Instructions

Installation work is carried out in such a sequence:

We deploy and fix the two-tier wire to connect passage switches.
On the installation section of the Cross Switch, we leave a small loop, but do not cut the wire.
Mount switches to the desired places.
We are summing up to the ending device ending conductors - two-core, zero or phase.
We test the network on the ability to control two points.
Turn off the power supply to the network.
On the installation section of the cross-drive device, a two-core cable is cut off. In the gap put the cross switch.
Apply power.
Check the network for performance with three control points.

For an interstitized switching switch inside the indoor switch, any exhausted twin-core cable with a corresponding load section is suitable. For lighting streets use double insulation conductors.

The passing were created for convenient lighting control in long corridors, on stairs, in the passing rooms and in other places. They are installed between the floors, during the descent to the basement, near the doors of rooms, which have several inputs. While in your home, it is convenient to switch the utility rooms. Or control lanterns on the porch and the homeland. The passage switch makes it possible to control the lighting from different places, eliminating people from inconvenience. This also saves electricity.

An ordinary switch contains a key to two positions and a couple of contacts. Wires are summed up to them. In contrast, the built-in passage switch switch consists of three contacts: one common and two cake. Each of them is also listed on the wire. To control lighting from multiple places, for example, from two, a switching device for 4 contacts is required. In addition, there must be a supply to each one by one wire. So, you can control not only lighting, but also by any other electrical appliances, although the installation of the scheme is complicated.

How does a classic switch work?

The principle of operation is that one chain is blocked by a crossing contact, and the other is closed. Connection diagram of the passage switch is always on its reverse side. One of the contacts is common (1), and two others - flipped (2, 3). Of two such devices located in different places, you can collect the simplest and most common lamp control circuit from two different points.

Conducting terminals 2 and 3 PV1 and PV2 switches are connected to the wiring. The input portion 1 from PV1 is connected to the phase, and PV2 to the lamp. Another end of the lamp is connected to the zero power wire. How the flow switch circuit works, is checked by inclusion. To begin with the voltage. In this case, the lamp lights up and goes out or goes out when independent switching any of the switches. If the chain of one of them is breaking, the diagram stops working. But at the same time, the other line is prepared for inclusion.

How to connect the simplest passage switch?

Before mounting, you should draw the diagram of all connections.

First set (RK). All wires will be collected in it. Food here is served from the control shield. For this, a three-core cable 3 x 1.5 mm is laid. It is most common for all connections. Here, two veins are feeding, and the third is for grounding electrical appliances. In addition, 2 conversion are installed in which switches will be placed. From each glass and from the lamp, three-core cables are laid to the Republic of Kazakhstan.

After all the wires and cables are in their places, connections are performed. First, the Phase L wire is connected between the output of the automaton and the input of PV1 (No. 1). The corresponding output contacts (2-2, 3-3) switches are then connected together. Next, they are installed in the opposition. Two cartridge terminals for the entrance of PV2 (№1) and to the blue core neutral from the control panel. If it is supplied from its output contact if one-pole - with a zero bus. The end of the grounding vein is isolated. Or is connected to the case of the lamp, if it is metallic.

When all connections are finished, a light bulb is screwed into the cartridge. Then the circuit of the passage switch is checked by turning the machine in the shield. The lamp can light up immediately. Or after switching on PV1 or PV2. You can repay it if you press the key to any of the switches. Important! In the switches there are no fixed positions "enabled" and "off".

Cross switch

Connecting the passing switches in three places requires an additional installation of the device cross-switched contact. It is 2 single-wave devices with internal jumpers collected in one case.

Cross switch (PP) is set between two ordinary. It applies only with them. Its distinctive feature is the presence of four terminals (2 inputs and 2 outputs). To control from four points you need to add another such device to the scheme. Connecting PP to cake contacts of passing switches follows so that the operating circuit of the lamp power supply is created.

Complex contact groups require a large number of wires and connections. Preferably collect multiple simple circuits. They work reliably and easy to operate. Note! All major connections are produced in junction boxes. No scrubs on the supply wires can not be done.

What model to choose?

What to apply the passage switch, first of all depends on the type of wiring. For open, overhead patterns are selected. Under the hidden will need to be conversion. You should choose the appropriate dimensions so that they can be connected to each other. It is important to establish the usual and cross switches with the same appearance. Devices are swivel, keyboard, lever, sensory. Contacts are selected under the appropriate load. Switching should be done easily. The devices are required to be securely attached.

Installation of a switching system of three points

To do this, make the following actions:

Draw a scheme of compounds.
Post and comprehend the lobes and excavations for wiring and boxes.
Install distribution parts. They are chosen large sizes so that you can do inside 12 connections.
Install sublinks.
Make a cable from a shield to connectivity places.
Connect the veins to the switches and terminals in the boxes. Wires to marking. Collect the scheme sequentially, with checking the correctness of the connections.
Install switches to your locations.

Connecting passage two-block switches

The device is 2 single-wave independent switches. They are collected in one case. In addition to the principle of crossing contacts. But at the same time the number of inputs is 2, and the outputs - 4. The difference is that 2 switches are located at different points. Their keys work on different lamps.

Installation of two-lying switches to control from two places

The sequence of actions should be like this:

A diagram is drawn up, without which it is difficult to make connections.
Installed junction boxes and picklers.
Mounted 2 lighting groups.
Three-core cables are paved at the calculation of connecting to 6 contacts of each switch and to lamps.
According to the composed scheme, the cable cable has been connected in the junction box, to the lamp cartridges and to the switches.

Two-block passage switch can be replaced with a circuit of four classmate. But it will be irrational. Because more distribution boxes will be required and the cable consumption will increase.

Manage two lighting systems with three places

Two-block switch passage is cross. It is installed in the kit. That is, it also includes two two-lying limit switch, if you want to control the lighting from three points. It will have 4 inputs and 4 outputs.

Installation is made as follows:

For mounting the standard box circuit with a diameter of 60 mm is not enough. Therefore, its size should be more. Or you need to consistently set 2-3 pcs. ordinary.
12 wire connections are performed for the connection. To do this, you will need a laying of 4 three-core cables. Here it is necessary to correctly perform marking lived. To two terminal switches, 6 contacts are suitable, and to the cross-8.
PV1 connects the phase. After you need to make the necessary connections. On the back of the device, a diagram of a two-block passage switch is depicted. It must be properly combined with external connections.
PV2 connects from lamps.
Four Outputs of PV1 are connected to the inputs of the cross-switch, and then its outputs are connected to 4 PV2 inputs.

Conclusion

The passage switch is convenient. It does not require an extra walk on stairs and long corridors to turn on or off the light bulb. Sometimes it is just necessary. In addition, electricity is saved at the expense of fast switching. It is important to choose the proper devices and correctly mount electrical connections.