The PetSafe® SmartDoor allows you to control your pet’s access. When set to automatic mode, only your pets wearing the SmartKey™ can pass through the SmartDoor. As your pet enters the range of the SmartDoor, the SmartDoor detects the SmartKey™ and unlocks automatically. The range is adjustable up to 91 centimetres. After your pet passes through the SmartDoor, the door will lock automatically helping to keep the house pets in and outdoor animals out. Your pet deserves the best. Trust PetSafe® to help keep your pet healthy, safe and happy.