The Intermatic FF36H is a 6hour commercial autooff timer in a brushed metal finish. It replaces any single or multigang standard wall switch. This model is designed to operate without electricity. It has a 6hour time cycle. There are models with limits of 5, 15, 30 and 60 minutes and 2, 4, and 12 hours are available. Additionally, the timer automatically limits the ON times for lighting, heaters, fans, motors, and other energy consuming loads.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 SPDT. Thanks to an easy presson knob design and time saving up front terminal connection, the installation process is quick and easy. This timer is particular does not have a Hold feature.