The Intermatic FD15MWC white spring wound auto-off timer is the classic residential spring wound in-wall timer, shutting off short-term use lights and electrical components after 15 minutes and making it perfect for fans, heaters, incandescent lamps, and small motors. Unlike other in-wall timers, spring wound timers do not require any electricity to operate, an advantage in cases where an electrical timer is not practical. Available in white, ivory, and almond, this spring wound timer can easily replace any standard single pole wall switch for enhanced energy savings.