Turn your lights on at dusk and off at dawn. For use in PAR38 flood lamp socket. UL listed for electrical safety. Save energy by reducing power consumptions from less operating hours. Weather-resistant for use in damp locations. Allows for 150W MAX. Rated for up to 120 VAC. For use with PAR38 incandescent, LED and CFL bulbs. Adds safety and security to your home by giving it that at-home feel while your away.