CARLING TECHNOLOGIESToggle Switch,SPST, ON-OFF (This switch is not momentary). This The LT-Series toggle switches are AC rated illuminated toggle switch. These lighted toggle switches contain neoprene bushing seals for dust and moisture protection. A variety of maintained and momentary single or double throw circuits, terminations, lamp voltages, and color sequences are available. LT-Series switches fit the industry standard .500 diameter mounting hole.