The Powermaster Switch 2G 2Way has two gangs, allowing it to control two different circuits. This type of switch is commonly used in situations where a light or other electrical device needs to be controlled from two different places, such as a hallway or staircase. The '2Way' indicates that it is a two-way switch, meaning it can be used to control a circuit from two different locations. The switch is wired using a three-core cable, and it can be easily identified by the presence of two brass terminals on the back of the switch. It is typically installed in a wall-mounted switch plate and is available in a variety of colors and finishes to match the surrounding decor.