LED-mounted type Key-Illuminated Type Membrane Switches are used for illuminating the whole key character or logo. These high-utility products are provided with enhanced visibility and design to augment the quality with looks of the equipments. They can be easily mounted on the bottom or side of the illuminated area. These switches are widely used for equipments managed in dark places like movie theatres. As they play an important role of lighting up a wide area, the thickness of these membrane switches should be at least 3 mm. Combination of Polydome type is recommended with these LED-mounted type Switches.