A microchip cat flap solves the problem every outdoor-cat owner knows — the neighbour's cat helping itself to your kitchen. The SureFlap reads your pet's existing microchip and opens only for them. How it works Reads your pet's existing microchip — no new collar or tag needed if they're already chipped Stores up to 32 microchips or tags — suits multi-pet households Works with all European chips — 9, 10 and 15-digit numbers RFID collar tag included as an alternative if your pet isn't microchipped Double locking mechanism engages the moment an unrecognised animal tries to enter Claw-proof door prevents intruders forcing it open from outside Five-way locking system Normal — your pet can come and go freely In only — useful before a vet appointment Out only Fully locked Curfew mode — set the hours the flap locks and unlocks automatically Features & specification Suits: larger cat breeds and small dogs Total size: 26.2 x 28.1cm (W x H) Required hole size: 20.7 x 23.4cm (W x H) Entrance size: 17.8 x 17cm (W x H) · Tunnel depth: 7cm Power: 4 x C batteries (not included), lasting up to 12 months LCD display with cover for easy programming; LED low-battery indicator Magnetic closure and draught excluder 6 additional custom modes — including a longer delay before locking Microchip recognition can be deactivated if you'd rather it operate as a standard flap Colour: brown or white · 3-year guarantee Installs in doors, windows and walls In the box: the pet door, 1 RFID collar tag, screws in three lengths, and the user manual. Batteries are not included. Sold separately: a mounting adaptor for glass windows (38cm diameter, covering holes of 29.4–32cm), and tunnel extensions for wall installation — each adds 5cm of depth, and several can be combined. Frequently asked questions Will it work with my cat's existing microchip?Almost certainly — it reads all European chip formats with 9, 10 and 15-digit numbers. If your cat isn't chipped, the included RFID collar tag does the same job. How do I fit it into glass?You'll need the mounting adaptor, sold separately, and the glass must be cut by a glazier. It isn't a job to attempt yourself with double glazing. What happens if the batteries die?The LED indicator warns you before that point. Battery life is up to 12 months in typical use. Can I stop my cat going out at night?Yes — curfew mode locks and unlocks the flap on a schedule you set, which many owners use to keep cats in overnight. Delivered across the UK — free delivery on orders over £59.99. Please note this item may be shipped from outside the UK, so allow a little extra time for delivery.