The Intermatic FF15M is a 15minute commercial autooff timer in a brushed metal finish. It replaces any single or multigang standard wall switch. This model does not require electricity to operate. It has a time cycle of 15 minutes. Additionally, the timer automatically limits the ON times for lighting, heaters, fans, motors, and other energy consuming loads.There are models with limits of 5, 30 and 60 minutes and 2, 4, 6 and 12 hours are available. Thanks to an easy "presson" knob design and time saving "up front" terminal connection, the installation process is quick and easy. In order to provide easy selection of the time setting, this model includes a plate with a spiral time scale and a knob. The switch configuration is SPST. Also, the timer does not have a Hold feature. This model is CFL compatible.