This Intermatic T101PCD82 24-hour dial time switch is designed for industrial, commercial, and residential applications and has the highest horsepower ratings in the industry for loads up to 40 amps, providing direct 24 hr. control of most loads. The dial time switch provides 1 to 12 'ON/OFF' operations each day with a minimum ON/OFF time of 1 hour. This dial time switch is great for booster pumps, lighting, hydro chlorinators, fans, air conditioning, music and signal systems, and heat pumps. This time switch is equipped with one 'ON' and one 'OFF' tripper and a see-through cover for added convenience.