SureFlap Pet Door with Microchip is a smart cat door that keeps unauthorised cats, dogs and other animals out of your home. The pet door has a built-in microchip reader that reads your cat or dog's ID chip, or ID badge (sold separately). You simply choose which dogs and cats are allowed in.Facts about SureFlap Pet Door with Microchip:Smart pet gate with Microchip.Keeps unauthorised dogs and cats out.Register up to 32 chips with access/egress rights.Works with all common chip tags on both dogs and cats in the Nordic countries.ID badge available to purchase for cats without chip tags.When mounted in walls, tunnel extension can be purchased additionally.When installing in a new door with a metal plate, a mounting adapter is required to prevent interference with the chip reading. Maximum door depth: 70 mm. For thicker doors/walls, a tunnel extender must be purchased. The tunnel extender adds 50 mm and can be connected in series.Battery requirement: 4 x C (not included). Batteries last betw