Automatic pet door with automatic opening and closing function. Cats can enter and exit by attaching the magnet key to their collar. *Extension tunnel and magnet key are not included. Please purchase them from the manufacturer if needed. - Brand: Sakai Pet Corporation - Product Name: Pet Automatic Door - Accessories other than the main unit: Instruction manual, power adapter, mounting screws (everything shown in the first photo) - Condition: New, unused It has been stored at home in an unused condition. The magnet key is not included this time because I only used the key when I was using the first unit. I purchased it several years ago, so there is no warranty or receipt, but the list price was around 30,000 yen. I will not be using it in the future, and I am decluttering due to a sudden move. Also, because the magnet key and extension tunnel are not included, I am selling it at this price. Magnet sensor keys can be purchased from the manufacturer for around 1,000 yen for two. Here is the product page of Sakai Pet Corporation: https://sanell.ocnk.net/product/398 It is for cats, but it can also be used for small dogs. Thank you. #CatDoor #PetDoor #AutomaticPetDoor #PetAutomaticDoor #CatGate #PetGate