The MCT-11 is a one-button MegaCode format (318 MHz) digital transmitter from Linear Entry Systems that can simplify operation of automatic garage door and gate operators. It features a high visibility test/operate LED and a spring-steel, dual-position visor clip that attaches vertically or horizontally. It measures 3.04-by-1.93-by-.61 inches. When pressed, it sends a unique code that can activate a garage door operator or most Mega Code 318 MHz wireless receivers. It is available for use with all Linear's garage door openers.