The illuminated rocker switch is a fantastic choice when a Multi-function switch is needed. The switch provides needed light and an economical and space saving alternative to Multi-ple switches. The rocker switch rocks from on to off positions and from on to off to on positions. It fits into rectangular mounting holes that measure 11/8 in x 7/16 in. The switch is incandescent and glows blue with terminals measuring 1/4 in. UL listed and CSA certified switch is designed for indoor use.