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 Is Alea safe...? (Does it monitor and adjust for ducts' air static pressure?) Should I get my duct system evaluated before adding Alea? How is each Alea device powered? Comments 0 comments Please sign in to leave a comment.