Give your cat a key to your home! The PetSafe® Microchip Cat Door reads your cat’s unique 15-digit microchip ID and allows access to the programmed pet while restricting the entry of unwanted animals (like those clever foxes). This cat door programs up to 40 pets, so it’s great for multi-pet households! Simply program your pet’s microchip to the door with the press of a button. The manual 4-way lock allows you to control your cat’s access, allowing you to lock it at night to keep your kitty safe inside; set to ‘Locked, ‘Unlocked’, ‘Enter Only’ or ‘Exit Only’. This door is powered by 4 AA Alkaline batteries and will signal when it’s time to change batteries. Your pet deserves the best. Trust PetSafe® to help keep your pet healthy, safe and happy.