Intermatic FF32HH 2-Hour Spring Loaded Wall Timer with Hold, Brushed Metal These energy saving timers use no electricity to operate These timers are designed to replace any standard wall switch, single or multi-gang Automatically limit the "ON" time of fans, lights, motors, heaters and other energy consuming loads Time saving "up front" terminal connection with teeter type terminals Easy "press-on" knob design ensure quick and easy installation