Intermatic FD12HHW 12-Hour Spring-Loaded In-Wall Timer Switch for Auto-Off control of Fans and Lights with Hold, White;

The 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.