What do you mean by "one-to-two control" and "two-to-two control" in the switch panel?

Let's talk about what is the first opening, the second opening, the third opening and the fourth opening. This is named according to the number of buttons on the switch panel. When turning on, there is only one button on the switch panel; When it opens, there are two buttons, and so on.

One-on-two-control means that there is only one double-control switch on a switch panel, and two-on-two-control means that two double-control switches are integrated on a switch panel, that's all. And now buy a switch, try not to choose screw connection, and now the high-end mainstream is U-connection, which is very convenient and safe.

When a panel is open, there is only one switch.

Two open? A panel has only two switches.

Double lights are controlled by double control.

A single controller is a switch that controls the lights. Dual control on one switch means that two switches control one lamp. Double switch control means that two switches control two lights. Double-on and double-control can control two double lights.

A single controller is a switch that controls the lights.

Dual control on one switch means that two switches control one lamp.

Double switch control means that two switches control two lights.

Double-on and double-control can control two double lights.

Single control is to control the switch of a light, which is the case in most families. Behind a single switch is a terminal.

Double control means that two switches control a lamp in different positions, such as stairs, halls and bedside, which need to be wired in advance. It can be opened here and closed there, and the single control can only be opened here and closed here.

For example, you can install a double control button at the door of the bedroom and a double control button at the bedside, so that two switches can control one light. An on-off dual-control switch is followed by two terminals. (Double control switches need to be purchased in groups of 2, and the wiring is very useful. )

Multi-control means that three switches control a lamp in three positions, and the general family does not need multi-control switches. There are six terminals behind the one-to-many control switch.