What is a single switch What is a double switch? How to arrange the switch when the interior design

Hello! To put it simply, a single switch controls a (group) lamp, and a double switch can control the same lamp. Generally by the door and at the head of the bed.

There are also places: there are two switches on a switch panel called a double switch, and four switches on a switch panel are called quadruple switches.

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Single switch (i.e., ordinary switch): There are two connecting posts, which are connected to the incoming and outgoing lines respectively. When the switch button is pulled or pressed, there are two states, turning on or off, thus turning the circuit into a path or an open circuit.

In the lighting circuit, in order to use electricity safely, the single switch should be connected to the live wire.

Dual switch: (i.e., dual control) means that there are two switches in one lamp (you can control the same light in different places, such as one at the door of the bedroom and one at the head of the bed, and control the bedroom light at the same time). However, the dual control must be designed at the time of wiring.

If the line is single-control, then you can't achieve dual-control if you buy a dual-control switch. However, the dual-control switch can be used as a single control, which is a bit wasteful, because the dual-control switch of the same specification will be more expensive than the single control.

Generally, the bedroom is dual-controlled, and the living room, kitchen, bathroom, balcony, corridor, and entrance are enough for single control.

We usually need to use switches to turn on the lights in indoor rooms or corridors, and the duplex switch is used to control the switch that goes up and down or down and off. It is different from the single-control switch that only serves as a spot control for the lamp, do you know what the principle of the duplex switch is? How do you connect a duplex switch?

Let's learn together!

1 What is a Duplex Switch?

The double switch is a switch with two contacts at the same time, usually two double control switches to control a lamp or other electrical appliances, which means that there can be two switches to control the switch of lamps and other electrical appliances, for example, turn on the switch when going downstairs, and turn off the switch after going upstairs. If you want to turn off the lights, you have to run downstairs to turn them off, and you can avoid this trouble by using dual-control switches.

2 Duplex switch principle.

The dual-control wall switch, also known as the single-pole double-throw switch, works on the principle of simultaneous control of a lamp in two places (different locations) at the same time. For example, the switch in the upstairs and downstairs controls the electric lights in the corridor, and the switch at the door and the head of the bed controls the lighting in the bedroom, etc.

This is a conventional method adopted by people in order to facilitate their daily life. The most common is the control panel on the bedside table in major hotels and inns, which has also approached people's homes in recent years and has become the mainstream of fashionable bedroom decoration. But with the emergence of new things in the remote control wall switch, it will be replaced by the new things, because the remote control wall switch does not have to transform the light line, does not have to do engineering, can easily realize the above dual control function, and can realize the centralized control in the hall, and can realize the functions of full opening, full closing, separate control, etc., and can realize multi-point control of a lamp, breaking the control limit that the dual control can only be at two points.

3 The difference between a duplex switch and a single switch.

The single-control switch, also known as the single-pole single-throw switch, is also the most common switch, with only one switch contact, unlike the dual-control that requires the conversion of two contacts. It is also the most commonly used switch in the home. It can only be used as a control switch in a single place, which is the characteristic that distinguishes the dual control switch.

4. Duplex switch connection.

The two contacts of two single-pole double-throw switches are connected respectively, that is, the contact 1 of switch 1 is connected with the contact 1 of switch 2, and the contact 2 of switch 1 is connected to contact 2 of switch 2, and then the knives of two switches are connected to both ends of the lamp as two ends of the whole switch. In this way, when the knives of 1 and 2 are connected to their respective contacts 1 or 2 at the same time, the circuit is turned on and the light is on. If one of the knives of the two switches hits contact 1 and the other hits contact 2, the circuit is not working, and the light is off.

Therefore, both switches can control the light. The two switches can be placed at the upper and lower ends of the staircase, or at both ends of the corridor, so that the lights can be turned on before entering the corridor, and the lights can be turned off at the other end after passing through the corridor, which can not only illuminate, but also avoid wasting electricity without turning off the lights when people walk.

The above content is the principle and connection method of the duplex switch that I shared with you, I think everyone has understood it after reading it, there are many connections of the duplex switch, but some are not standardized. It is best to follow the standard connection method when installing, otherwise there will be potential safety hazards.

<>1, the double switch is a switch panel on two sets of switches, can control the two lights to open and off, the double control switch is a switch that can realize the switch lamp in different places, it has three terminal points, Bu or one is the public transport terminal, respectively and the other two terminals on or off. A double switch is a panel with two dual control switches.

2. For example, the quiet lighting used on the staircase. It is required to be able to control its lighting and extinguishing upstairs and downstairs. It needs to be connected with two wires. Connect the two switches so that you can easily control the lights on and off.

1. The panel is different.

Single: It is a switch, the panel has a pedal, which is divided into single and single control, single and double control.

Duplex: It means that two switches are side by side, and there are two pedals on a panel, which are divided into double single control and double double control.

2. The binding posts are different.

The single control switch has only two binding posts, one in and one out, to control the closure of the line; The dual control switch has three binding posts, (it can be one in and two out, or two in and one out, of course, it is also used as one in and one out.)

3. Different usage.

A single-control switch is a switch that controls a light; The dual control switch is to control the opening and closing of the same lamp with two different places, such as the living room, stairs and other positions, so that it is not necessary to go back to the bedroom in the dark after turning off the light (entrance door), which is very convenient.