DescriptionWith its advanced selective entry technology, our PetSafe Microchip Cat Flap has been designed to allow your cat easy access to the outside world whilst keeping other troublesome cats and animals out of your house.Using radio frequency identification (RFID) technology, the PetSafe Microchip Cat Flap works by reading your cat's unique microchip ID without the need for a collar or accessory. When your cat approaches the cat flap, the flap will respond by allowing only your cat to enter. The cat flap will remain locked and deny access to cats that are not programmed, wild animals, pests and strays.The cat flap is also designed with a convenient Manual 4-Way lock that allows you to control the access of your programmed cats.The PetSafe Microchip Cat Flap reads the most common type of microchip implanted in cats - FDX-B (15-digit). If you are not sure what type of microchip your cat has, try our microchip compatibility checker, and enter your cat's microchip ID to verify that your microchip is compatible.Microchip Compatibility CheckerYour PetSafe Microchip Cat Flap or Petporte smart flap Microchip Cat Flap will only work if your cat has been fitted with a microchip.At present, some older and non-standard microchips may not work with this cat flap. You can check to see if your cat's embedded microchip will work by entering the number in the box below and clicking the "check" button.You will find your cat's microchip number on your microchip registration form which will have been issued to you by your vet.Please note that chips with 10 digits, lettered characters, and those starting with 977xxxxxxxxxxxx and 98514xxxxxxxxxx are not currently compatible with the cat flap.