Switches with the arrangement 1 (single), staircase switch, cross switch, switch with the numbering 1/0+1... At first glance, they may seem identical, but the reality is different! These are actually completely different devices with distinct functions. How can you navigate through them? Let's introduce the basic types of switches along with their functions and use in households for a better overview.

The switch with the arrangement 1 (single) is a single-toggle switch used to control one appliance/light bulb or multiple light bulbs connected in a single circuit from one location. After toggling, the switch remains in the selected position. It is commonly used in rooms with a single entrance, such as bathrooms, toilets, children's rooms, pantries, and more.

The switch labeled as "1N" (single) serves the same function and has the same applications as the "1" switch, but it comes with an additional connecting contact. It is typically used for switches with illumination or as a signal for the operational status of a device.

The "1/0" switch (push-button) uses a single lever and, upon being pressed, automatically returns to its original position. It is used for momentary circuit activation and finds applications such as doorbells or for turning on a bathroom fan, where short-term activation is needed.

The "1/0N" switch (push-button) uses a single lever with illumination, and it also has an additional connecting contact. It is typically used for switches with illumination or as a signal for the operational status of a device.

The "2" (two-pole) switch is operated by a single lever, which, when switched on/off, simultaneously engages/disengages two contacts. It has dual applications. It is more commonly used for the safe disconnection of two-pole devices, especially recommended in humid areas like bathrooms or basements. Additionally, it can be used to control two electrical circuits simultaneously.

The "5" switch (2-gang 1-way switch) operates on the same principle as the "1" switch but uses two levers that control two independent electrical circuits, typically within one room. Therefore, their use is suitable for spaces like living rooms or offices, where each lever controls a separate lighting circuit, such as a chandelier. 

The "6" switch (1-gang 2-ways) is a single-toggle switch used to control one electrical circuit from two different locations. Its most common application is at both ends of a staircase, allowing you to turn the lights on from one side and off from the other. It is also typically used in rooms with two entrances, such as hallways or kitchens. Additionally, it can be useful in bedrooms, where one switch is located by the door and the other by the bedside.

The "7" switch (crossbar) uses a single lever and is always placed between two "6" switches, allowing the control of one electrical circuit from three or more locations simultaneously. It is mainly used in hallways but can also be found in kitchens or on staircases - essentially anywhere with multiple entrances to a room.

The "6+6" switch (double 1-gang 2-ways) is a two-lever switch, essentially combining two "6" switches in one device. This type of switch is commonly used in hallways and kitchens..

The "6+1" switch (1-gang 2-ways + single) features two levers, combining the functionality of a "6" switch and a "1" switch in a single device. It can be used, for example, in hallways with entrances to the bathroom or toilet, or in kitchens near the entrance to a pantry.

The "1/0 + 1/0" switch (double-push button), combining two "1/0" switches with a return function. It is commonly used for controlling blinds, garage doors, electric gates, or doorbells in multi-generational homes, providing convenient control for two separate functions with a single device.

The "1/0 + 1" switch (push-button + single)  is operated by two levers and combines the functionality of a "1/0" switch with a return function and a standard "1" switch, which remains in the selected position after toggling. It is commonly used in places like bathrooms, where the "1" switch controls the lights, and the "1/0" switch controls the fan, providing separate control for two functions.

The cooker switch with a 16A rating operates on a rotational principle. When rotated to the right (by 45°), it engages 3 contacts. This type of switch is used for three-phase domestic applications, such as for electric stoves or cooktops.

The shutter switch has two switching contacts - one on the right and the other on the left. When turned up to 50° (in either direction), the switch automatically returns to the default off position. If the controller is rotated to the extreme position, it locks in place and won't return to the default position. The rotational blinds switch is primarily used as a control for roller blinds, shades, or gates.

The LED dimmer switch with rotation is used to adjust the brightness of a light source, which can be either traditional incandescent bulbs or LED bulbs. Pressing the controller turns the light on or off. It is primarily used in living rooms. Its advantage lies in the ability to control the brightness of the lighting and create a comfortable lighting atmosphere for various uses of the room.

Instructions for installing switches and outlets can be found here.