ROYU classic 2 gang switch with plate ( CLASSIC ) ROYU classic 2 gang switch with plate chat us if you need other size or other item.. and we will post it for you.. thanks There are many different types of electrical switches. Switch function is defined by the number of poles and throws the switch has. “Poles” are individual circuits the switch controls (e.g., a “3-pole” switch has three circuits controlled by the same throw). “Throws” are unique positions or settings for the switch (e.g., a “double-throw switch” can operate in two different positions like on/off, high/low, etc.). Combining the number of poles In electrical engineering, a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit, interrupting the electric current or diverting it from one conductor to another. The most common type of switch is an electromechanical device consisting of one or more sets of movable electrical contacts connected to external circuits. When a pair of contacts is touching current can pass between them, while when the contacts are separated no current can flow.