New in Box Programmable Heat Cooling Vent 4" x 10"

For sale new in Box Programmable Heat Cooling Vent 4" x 10". A programmable energy saving vent. Heavy duty steel construction. Heat or cool the rooms you choose and save money. Vent programs to automatically open and close which controls airflow in unoccupied rooms day or night. Removable digital module for easy programming and battery installation 7 day programming provides 2 open and close cycles per day Simple 3 button programming Low battery audible alert lets you know when it is time to change the battery Push button back light Fit duct size 4" x 10". Thanks for reading.