What is the difference between a single switch and a double switch?

One open single control and one open double control is not the same, ** is not the same, under the same model, one open double control switch **expensive.

The binding posts are also different, there are generally two binding posts when the single control is opened, the live wire is in, and the control line is out.

The switch with one open and two controls has three binding posts, the live wire in, and the two control wires out.

The switch with one open and two controls can replace the switch with one open and single control, and the reverse cannot be used.

One open single control is a single pole single throw switch, two binding posts, can only control one light. The one-open double-throw switch is a single-pole double-throw switch, three binding posts, which can be used as an ordinary single-control switch, and can also be used with two switches to achieve dual control of one lamp.

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What does it mean to open and double control as follows.

One open and double control is a switch, and the switch control on the panel is a double control switch. Single-open and double-control, also known as one-open and double-control, is one of the electrical switch control methods, including single-open single-control, single-open double-control, double-open and double-control, etc. One open and two controls:

There is a switch button on each of the two control panels, and the two switch buttons control a circuit at the same time, such as a light installed on a staircase, which can be turned on or off on the staircase and on or off under the staircase.

The two functions of one open and double control switch: it can control the power supply to output to two devices respectively; It is possible to control a device for different output forms.

The moving end is the so-called "knife", which should be connected to the incoming line of the power supply, that is, the end of the incoming call, which is generally the end connected to the handle of the switch; The other two ends are the two ends of the power output, the so-called immovable end, which are connected to the electrical equipment.

1. Difference: Two-open single control refers to the switch that can only control one circuit for both. Two-open and dual-control refers to two switches that can control two circuits, and are usually used in the staircase light control and bedroom light control at home.

That is to say, the two open single control is two switches to control the two lights. And the two-open dual-control is to control two duplex lights.

Second, the switch is open: it means that a panel has two covers, that is, there are two switches, and the two switches are close together.

Third, the single control of the switch refers to the ordinary switch, as if, there is a wire on the left, there is a wire on the right, the line on the left can only be connected with the wire on the right, and it is connected to the air when it is not connected.

Fourth, the switch dual control is like, there is a line on the left, there are two wires on the right line and offline, when the left line is connected to the right line, there is power on the line, and when the line is disconnected, it will be connected to the line, and there will be electricity on the line.

Fifth, the wiring diagram of the two-open single-control switch:

Sixth, two open double control switch wiring diagram:

There are differences, and the differences are as follows:

First, the role of the two is different:

1. The function of one open and multiple control switch: one open and double control switch can control the same electrical appliance in many different directions, so it is more practical.

2. The function of double-open multi-control switch: open or close are on the same switch panel, and can be turned on or off on one of them.

Second, the types of the two are different:

1. Types of one-open multi-control switches: one-open, multi-control switches can be divided into four types: one, two, three, and four.

2. Types of double-open multi-control switches: according to the way of use, they can be divided into switches, sockets, and switches with sockets.

Third, the application of the two is different:

1. The application of one open and multi-control switch: usually installed at the door of the house or bedroom door, etc., it can easily turn on or off the lights in public areas to solve the problem of darkness in life. In places with a large number of lighting paths, such as the living room, the scene button can memorize a pre-set set set of lighting effects to help you get it done with one click when switching scenes.

2. The application of double-open multi-control switch: the device that is set to open can be turned on and off, and the device that is set to be off can only perform the off operation, directly press the area button to perform the turn on or off of the set device, when the indicator light is on, the off operation is performed, and the turn on operation is performed when the indicator light is off.

There are 6 binding posts with one open and multiple controls (in fact, it is a combination of two dual controls), and there are only three binding posts with one open and two controls.

All of them are 1 open, how to distinguish between single control, dual control and multi-control switches? Let's start with switches when learning to become an electrician.

1. The principle is different: there is only one switch for a single control, which can only be controlled in one place. One turn on and two controls are the same light, you can control not only in one place, but also in another.

For example, you want to install a switch at the door of the bedroom to control the light in the bedroom, or you can install a switch next to the bedside where you sleep to control the light. If you use a single-control switch panel, you can't do that.

2. Different functions: the single-control switch panel can be double-controlled switch.

Panel, it has the function of a single control switch, but a single control switch cannot replace a double control switch.

3. The appearance is different: each button of the single-control switch can only be connected to two wires, while the dual-control switch can be connected to three wires per button.

4. **Different; With the same number of buttons, the single control switch and the double control switch, the ** of the double control switch will be more expensive than the single control switch.

5. The applicability is different: the double-press switch can be used as a single-control switch, and the second-single-control switch cannot be used as a single-control switch.

Switch purchase tips

1. Look at the appearance: It should be noted that the panels of high-quality switches and sockets should be made of high-grade plastic products, which look uniform in material and have a smooth and textured surface. The panel materials are all selected from the United States General Motors.

Imported PC material (bulletproof adhesive), its flame retardancy, insulation and impact resistance are very good, and the material is stable and not easy to change color.

1. Look at the internal structure: as far as the switch is concerned, sterling silver contacts and conductive sheets made of silver-copper composite materials should usually be used, which can prevent oxidation caused by arc when opening and closing. The conductive bridges of the high-quality panels are made of silver-nickel-copper composites. Electrical conductivity of silver materials.

Excellent, and the silver-nickel alloy has a very strong ability to suppress arcs, and the switch is made of brass.

The screw crimping has a large and good contact surface, strong crimping ability, and stable and reliable wiring.

2. Safety: The safety protection door of the socket is essential, and you should try to choose the product with the protective door when choosing the socket. Secondly, it is necessary to check the tightness of the socket clamp piece, and the smooth insertion force is a key factor.

At the same time, the strong extrusion makes the plug not easy to fall off, which effectively reduces the occurrence of non-human factors of power failure accidents.

The above content refers to Encyclopedia - Single Control Switch.

One open and double control is a switch, and the switch control on the panel is a double control switch.

Single open and double control: there is a switch button on each of the two control panels, and the two switch buttons control a circuit at the same time, such as the light installed on the staircase, which can be turned on or off on the stairs and can also be turned on or off under the stairs.

Single-open and dual-control literally means that there is a switch and control on both sides. For example, let's say you turn on the lights before you enter the bedroom, and then turn off the lights at the head of the bed. This requires the use of single opening and dual control. The lights can be turned on and off in two places.