Rocker switches switch between circuits when the operational part is pressed and the left and right edges are lifted up and down. They are mainly used for switching on and off the main power supply in devices. ★翻訳対象外★ They are found in various applications such as light switches on building walls that turn the light on and off, power switches on communications devices, etc. Switches are available with rectangular or round operational parts, as well as illuminating types that light up the operator panel when power is on to provide visual confirmation. Rocker switches are easy to operate by hand, which also makes them prone to accidental operation, and for this reason, some switches come with accessories called "guards".