Turns the air circulator fan ON for a pre-selected amount of time each hour; easily adjust time delay with options from 5 to 60 minutes or deactivate this setting using the 'Mins per Hour' knob located under the faceplate; also features a manual ON/OFF switch to override timer settingsLED fan indicator lights up when the fresh air fan is in use; any time changes are made to the timer settings, the LED will flash to indicate that changes have been appliedImproves indoor air quality by running the air-circulator fan for a set amount of time each hour; automatically turns OFF on an adjustable countdown timerWhite color; compatible in newer homes only - NEUTRAL WIRE IS REQUIRED FOR INSTALLATION; single-pole use only; 120VAC 60Hz; 1/4HP rated motor; 3A maximum fan load; wall plate sold separately; UL-ListedIdeal for windowless rooms or poorly ventilated locations such as basements, restrooms, or offices; running the fan periodically increases the airway, ensuring that the indoor air remains fresh and comfortable