PetSafe Electronic Pet Door Key for Electronic Pet Door

Unlocks Door for Your Pet – The Electronic Pet Door Key lets your pet come and go; fits most collar ID tags.Indoor and Outdoor Access – Uses RFID technology to send a signal to the Electronic Pet Door to lock and unlock the flap; helps keep out unwelcome animals.Multiple Pets – Use as a replacement or add more pets to your Electronic Pet Door.Door Compatibility – Works with all sizes of the PetSafe Electronic Electronic Pet Door; not compatible with the SmartDoor Plus or SmartDoor Connected Pet Door.Long Lasting – Battery is included and lasts 3-6 months, depending on use.Package Includes – 1 Electronic Pet Door Key and 1 battery (RFA-67).