Type S magnetic contactors and starters are for motor control applications and 8903S lighting contactors are for lighting control applications. This red pilot light kit is for NEMA size 00, 0, 1 and 1P Type S contactors and starters in NEMA 1 enclosure. This pilot light kit will work from 6 to 600 volt. The pilot light is mounted on the top of the Type S device. The lens in inserted into the knockout in the enclosure cover. This light module kit is UL listed and CSA certified. This light module kit is UL listed and CSA certified.