The Intermatic FD15MWC is a 20 amp 15-minute decorator in-wall spring wound timer switch 120-277 volt in white color finish. The Intermatic timer FD15MWC is designed to replace any standard wall switch - single or multi-gang. This series of energy-efficient mechanical timers do not require electricity to operate. In addition, they automatically limit the ON times for fans, lighting, motors, heaters, and other energy consuming loads.