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