NSI Tork® Photo control in yellow finish is made of polypropylene material for long durability. Photo control has a voltage rating of 480 Volts for better performance. It features turn locking solid brass prong mounting offers maximum corrosion resistance. It features delay action that eliminates load switching off due to car headlights, lighting. It has Bi-metal relay that provides positive snap action switching, reducing bounce and ensures longer- life. It has temperature rating of -40 to 140 deg F and is ideal for outdoor applications. It has solid brass locking prongs for maximum corrosion resistance and electrical dependability.