How is each Alea device powered? Brad January 08, 2019 18:22 Updated The vents are powered by 4 AA batteries. Related articles How long will Alea's batteries last? Is Alea compatible with home automation systems so I can control everything from 1 app? Is Alea the same thing as a zoned heating and cooling system? What colors are available for the Alea vent grille covers? Will I be notified when I need to change Alea's batteries? Comments 0 comments Please sign in to leave a comment.