Is Alea safe for pets and children? Brad September 25, 2018 17:56 Yes. The vents are battery powered and the louvers motion is stopped if they sense pressure caused by an inserted object. Related articles What colors are available for the Alea vent grille covers? Will I be notified when I need to change Alea's batteries? How is each Alea device powered? Is Alea safe...? (Does it monitor and adjust for ducts' air static pressure?) Comments 0 comments Please sign in to leave a comment.