A silver-contact dual control switch refers to the separate control of two positions in a piece of equipment. Dual Dual control refers to two keys that have no position on the two panels. A total of two power supplies can be controlled to achieve the same control in different locations. equipment. Single-connected dual-control switch principle A single-connected dual-control switch is actually two SPDT switches connected in series and then connected to a circuit.

The three terminals of each SPDT switch are connected to two silver contacts and a pole. Let's take a look at the difference between the different types of switches on the silver contacts.

The single and double control switch connections connect the two contacts of the two SPDT switches respectively, and then connect the two switches to the ends of the lights at both ends of the entire switch. When the switch is connected to the various contacts at the same time, the circuit opens and the light illuminates. If one of the two switches touches the contacts and the other touches the contacts, the circuit is blocked and the light goes out.

Both switches can control the lights. Two switches can be placed on the upper and lower ends of the stairs or at both ends of the hallway, so that you can turn on the lights before entering the hallway and turn off the lights on the other end after walking through the hallway, both to illuminate and to avoid wasting light. electricity.

Silver Contact Double Double Control Switch Principle The definition of double double control switch is similar to the definition of single double control switch. The only difference is that the dual connection is a 2-button switch, while the single connection is just a one-button switch.

So what is a 2-way 2-way switch? Actually, it's very simple, that is, on one panel, two power devices are controlled by two buttons, that is, two switches control two circuits.

Wiring for a 2-way 2-way switch connects the middle terminal of one 2-way switch to the live wire, then connects the middle terminal of the other 2-way switch to the base (or the center tongue of the screw base), and then the return line. That is, the upper and lower terminals are connected with two green wires, respectively.

The neutral wire is connected directly to the other contact of the lamp head (or the thread of the nut), thus completing the connection.