Smart pet doors
SureFlap Microchip Pet Door review
Published 20 June 2026
The larger SureFlap, sized for big cats and small dogs while keeping the same reliable microchip recognition and 32-pet memory. The go-to when a standard cat flap is too small but you do not need a full dog door.
Best for: Large cats and small dogs needing a bigger opening
From £109.99 checked 20 Jun 2026
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What works
- Bigger opening for small dogs
- Reliable SureFlap recognition
- Stores up to 32 pets
- Curfew timer
- Versatile fitting
What falls short
- No app on this model
- Battery powered
- Larger cut-out needed
How it scores
We rate every product in this category on the same criteria, weighted by how much they matter in daily use. Each score is out of 10.
| Criterion | Weight | Score | Why |
|---|---|---|---|
| Recognition accuracy and reliability | 25% | 9.0 | Same reliable SureFlap recognition in a larger frame |
| Security and stray exclusion | 20% | 9.0 | Registered-pet-only access, strong stray exclusion |
| Weatherproofing and seal | 15% | 8.0 | Magnetic seal, good weatherproofing |
| Response speed | 10% | 8.0 | Quick scan-and-unlock |
| Pet capacity and compatibility | 10% | 8.5 | Stores up to 32 pets; all common chip formats |
| App and access control | 10% | 4.0 | No app on this model; curfew on the unit |
| Installation and fit | 5% | 7.5 | Larger 207x234mm opening for big cats and small dogs; door, window, wall |
| Value | 5% | 8.0 | Good value for the larger size |
| Weighted total | 8.08 |
How we score: each rating combines the manufacturer specification with the weight of feedback from owners and independent reviewers. We do not copy other reviews. The score is our own synthesis, and we show the reasoning so you can judge it yourself.
See how the SureFlap Microchip Pet Door ranks against other smart pet doors
Key specifications
| Recognition | Microchip, all formats |
|---|---|
| Opening | Large cats, small dogs |
| Capacity | Up to 32 pets |
| Locking | 4-way plus curfew |
| Power | Batteries |
| Fitting | Door, window, wall |
Common questions
How big a pet does the SureFlap Pet Door suit?
It is sized for large cats and small dogs, with a 207x234mm opening, bigger than the standard cat flap but not a full large-dog door. Check your pet's shoulder height and width against the opening.
Is recognition the same as the cat flap?
Yes, it uses the same reliable SureFlap microchip platform with a 32-pet memory, just in a larger frame.
Can it go in a wall?
Yes, it fits doors, windows and walls, though wall installations need a tunnel extender kit, sold separately.
Looking at something else? See our pet cameras