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 How is each Alea device powered? Is Alea safe...? (Does it monitor and adjust for ducts' air static pressure?) How many Alea vents to I need to have an impact in my home comfort? 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.