🐶 Unlock the freedom your pets deserve! Enhanced security with auto-locking features. U.S.-based customer care for all your needs. Easily accommodates up to 5 pets with programmable keys. Let your pets roam freely with automatic access! Battery-operated for uninterrupted access. Multi-pet support Battery-operated Auto-locking security The PetSafe Smart Dog Door is a large, collar-activated electronic pet door designed for convenience and security. It features programmable selective entry, accommodates multiple pets, and operates on batteries, ensuring your pets can access the outdoors safely and freely, even during power outages.