The difference between one-to-two control and one-to-many control.

One open and two controls, that is, double control switch; One-to-many control, that is, multi-control switch, the main differences between them are as follows:

First, the nature is different.

1. Double control switch: a switch with two normally open and normally closed contacts (i.e. a pair).

2. Multi-control switch: it can control the light switch in infinite places.

Second, the principle is different.

1. Double-control switch: The double-control switch consists of two single-pole double-throw switches, as shown in the figure: when K 1 is turned to 1, the line is connected when switch K2 is turned to 3 and disconnected when it is turned to 4. So as to control an electric appliance in two places. Nowadays, people's quality of life has improved, and double control is widely used in family living rooms and bedrooms.

2. Multi-control switch: Multi-control switch uses multiple switches to control an electrical device. In fact, a double-pole double-throw switch is connected in series between the two single-pole double-throw switches of the double-control switch.

Third, the composition is different.

1. Double-control switch: It has three terminals, and generally cooperates with another same single-open double-control switch to form two switches, which control the switch group of an electrical appliance at the same time.

2. Multi-control switch: it has six terminals and consists of two single-open and double-control switches on a switch panel, and the two single-open and double-control switches are controlled by a rocker at the same time. Generally, the combination of three switches and two single-open and double-control switches simultaneously controls the switch group of an electrical appliance, or the combination of multiple switches and two single-open and double-control switches simultaneously controls the switch group of an electrical appliance.

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