Bathroom exhaust fans are usually run for extended periods of time, and most often for more time than is needed. The Automated Exhaust Fan Feature gives you the ability to activate the exhaust fan and forget about it. 

Upon activation the fan runs for a specified amount of time that is directly related to the size of your bathroom, and then automatically shuts off and awaits your next activation. A very simple feature that pays for itself.

An Exhaust Fan Smart Switch is placed in any of your bathrooms with programming that runs the fan for a specified period of time and then automatically shuts off.