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Microchip cat flaps
What Sure Petcare's UK shop says its Microchip Cat Flap does, including selective entry, battery life, memory and the prices listed on 14 November 2026.
A microchip cat flap reads an identity and unlocks for the animals it has learnt. It is not a GPS tracker and it is not a lock against people. This page is about one product whose UK shop page was open on 14 November 2026: the SureFlap Microchip Cat Flap sold by Sure Petcare. Figures below are that page's figures.
We haven't tested this. Figures are as the maker states them (checked 14 November 2026).
What the shop page says it does
Sure Petcare says the flap prevents intruder animals entering, and that entry is selective: any animal can exit, because the microchip reader is on the outside of the flap only. It says you programme a cat's microchip with one button, the identity is then stored, and the flap unlocks when that pet approaches because it reads the unique code on the microchip or on a collar tag.
It says the flap stores up to 32 pet identities and remembers registered cats even when the batteries are removed. It claims up to 12 months of battery life from four AA batteries, which are not included, and a low-battery light. A manual lock can stop the cat leaving or entering, or be set to in-only so the cat can come in and not go out again. It says the flap works with all common identification microchips and with RFID collar tags, which are not included, and that a compatibility checker is on the page. It lists a 3-year warranty, installation in doors, windows and walls, and white, brown and grey/white versions.
The same page says the RFID collar tag is an alternative if the pet is not microchipped, and that the tag is not compatible with SureFlap Microchip Cat Flaps with a serial number of 1152201 or lower. An England cat that is old enough still needs a legal microchip. A collar tag is not that chip. See microchip versus a GPS tracker.
Listed prices on 14 November 2026. On the Sure Petcare UK shop the Microchip Cat Flap was listed at £70. Accessories on that same page ran from £9 to £22: a tunnel extender at £9, a pack of three tunnel extenders at £22, a mounting adaptor at £13.50, a plastic flap replacement at £10, and a pack of two RFID collar tags at £10.50. That is the band on the page that day, £9 to £70 if you include the flap itself with those accessories. It is not a sale price we negotiated, and it will date.
The hole size, as the maker prints it
Sure Petcare prints these dimensions on the same page. They are the maker's drawing, not a measurement we took.
| Part | Figure on the shop page |
|---|---|
| Flap opening | 142 mm wide by 120 mm high |
| Tunnel depth | 70 mm |
| Door or wall cut-out | 165 mm wide by 171 mm high |
| Glass hole | 212 mm optimum, and the page says the flap can go in holes up to 260 mm across |
| Exterior frame | 210 mm by 210 mm |
| Tunnel thickness | 4.5 mm |
| Interior frame depth | 42 mm |
| Interior of the tunnel | 150 mm wide by 155 mm high |
The page says you do not need an extra accessory to fit the flap in a door. Tunnel extenders are described for walls: each one adds 50 mm, and they fit the 70 mm tunnel. The mounting adaptor is described for glass holes from 212 mm to 260 mm, with an overall diameter of 285 mm. If you are cutting glass, that is a glazier's job. This site does not give a cutting method.
The shop footer says Sure Petcare products are not intended to diagnose, cure, treat or prevent diseases or conditions and do not replace veterinary care. A flap that lets a cat out does not decide whether that cat should be out. Roads, neighbours' food and fights are outside the flap's claim. The RSPCA's note on quick-release collars still applies if you hang anything on the cat: cat collars and trackers.
What the lock does not stop is in what a cat flap does not lock.
Will other cats get in?
Sure Petcare says unwelcome cats and wildlife stay out because the flap stays locked for them, and that the reader is on the outside only. Any animal can exit. A cat you have programmed can come in. A cat you have not programmed should not, on that description. You still have to programme only the cats you mean to, and the manual lock is the control when you want nobody going through.
Do the batteries wipe the memory?
The shop page says the flap remembers registered cats even when the batteries are removed. The "up to 12 months" life is the maker's claim for four AA batteries, not a test in a cold porch.
Is £70 the price I will pay?
It was the listed price of this flap on the Sure Petcare UK shop on 14 November 2026. Accessories on the page were £9 to £22. Check the page again before you buy. We do not track the price after that date.
Sources
- SureFlap Microchip Cat Flap — Sure Petcare UK shop, accessed 14 November 2026.
- Get your dog or cat microchipped — GOV.UK, accessed 14 November 2026.