Energy Saving Programmable Vent 10" x 4" brown metal

Energy Saving Programmable Vent 10" x 4" brown metal

Heavy duty steel construction Removable digital module for easy programming and battery installation Simple 7 day (5 week days, 2 weekend) 3 button programmable timer that can be set to open and close 2 times per day Digital system over ride function that allows the user to open or close the vent without interrupting the programmed open and close time cycle Low battery alert similar to that on smoke detector Push button back light Operates on 2 AAA batteries (not included)