PetSafe Electronic SmartKey Collar Key BirdFoodPetType_Amazon Battery Lasts: Each charge usually

Battery Lasts: Each charge usually lasts 3 months

Resilient Immune System: We’ve included key sources of antioxidants in our formulas (blueberries

Plant-sourced protein

A crate offers a positive solution to house-training and minimizes destructive behavior

Can be used as a top layer on other beddings that pack down (shavings

PetSafe Electronic SmartKey Collar Key BirdFoodPetType_Amazon Battery Lasts: Each charge usuallyOnline Only Item Replace a SmartKey or add more pets to your PetSafe Electronic SmartDoor. The SmartKey fits most collar ID tags and uses RFID technology to send a signal that locks and unlocks the door flap when it senses your pet. You can add up to 5 pets to your SmartDoor. Package includes 1 SmartKey and 1 battery (RFA 67). Trust PetSafe to help keep your pet healthy, safe and happy. Unlocks Door for Your Pet The SmartKey lets your pet come and go;