What does a single dual control switch mean?

Abstract: What is the meaning of single-linked double-control switch? Single-connected and double-controlled switch refers to controlling a lamp in two different places at the same time. For example, there is a switch at the door of the bedroom and the bedside, and these two switches control the bedroom lights at the same time. If you choose a single-open and double-control switch at home and use the correct wiring method, how can you wire the single-open and double-control switch? Let's have a look. 1. What do you mean by a single double control switch?

In fact, a single-double-control switch is a switch in which two single-pole double-throw switches are connected in series and connected to the circuit. Each single pole double throw has three terminals, which are respectively connected with two contacts SPDT a knife. Among the three connections of the single-connected dual-control switch, one is the live wire incoming terminal and the other two are the live wire outgoing terminals, that is, there are two live wires between the two switches. Single-connected and double-controlled switches are widely used in daily life. A switch controls multiple groups or even multiple groups of electrical appliances, which is often used in the stairwell of schools, hotels and families.

Second, how to connect the single-open double-control switch?

1. If you want to open and close the dual-control switch, the connection mode is relatively simple. First of all, we need to distinguish between live wire and zero wire, which can be directly distinguished by electric pen. After distinguishing, connect the live wire to the L terminal of 1 switch, and then connect the other two live wires to the L 1 and L2 terminals of1switch respectively.

2. At the same time, it is necessary to connect the L 1 and L2 terminals of the second switch, and then connect the control line of the lamp to the L terminal of the second switch, and connect the zero line to the corresponding terminal. Finally, pull the wire to see if it is loose. If not, tighten the wire. Turn on the power supply to see if it is electrified. If so, cover the panel.