This plate switch 1 gang 1 way is made from modern plastic and will fit any single back box. It has 1 switch (1 gang) and is used to control the lights in a room and is fitted adjacent to the door. The 1 way means the light can be switched from 1 location. This fitting but can be used in many other domestic and commercial applications. Its is designed to withstand normal knocks and can easily stand up to the wear and tear of busy working conditions.