Spring Wound Countdown Timer, Decorator Style, 125-277 VAC, 50/60 Hz, SPST, 6 Hour Max, Without Hold, WhiteThe FD Series Decorator Countdown Timers are designed to replace any standard or decorator style wall switch, single or multi gang. These mechanical timers do not require electricity to operate. They automatically limit the ON times for fans, lighting, motors, heaters and other energy consuming loads. *NOTE: Not for use with sunlamps, saunas, or loads that could cause personal injury if timed incorrectly. 6 Hour timer SPST (Single Pole Single Throw)