Preset Countdown & Hourly Timer On/Off control allows you to preset the fan to run for a specific period of time (5-60 minutes). It will then shut the fan Off automatically for you, making it an ideal product for tenant family use. Advanced, easy-to-use Adjustable Minutes Per Hour (MPH) fan timer is included for ASHRAE 62.2 compliance.  Commercial Grade, 8 Amp Max load.  Wall Plate Included.