Buy Electrical Switches And Light Switches Best Price in Nigeria from Precise Lighting. Electrical switches are components that regulate the current flow in a circuit. They play a significant role in turning electrical devices on and off resulting in comfort, safety, and energy efficiency. Turn devices or circuits electrical switches specifically designed for controlling lighting fixtures' illumination are known as "light switches." Depending on how many locations you wish to control the light from, light switches are often single-pole or three-way switches.