The right microchip cat flap depends on four checks: your cat’s chip format, whether you need entry control or separate exit permissions, the opening your cat can use, and the material of the door or wall. The available specifications support seven identifiable models or variants—not ten independently verified current products—so this guide lists those seven rather than padding the ranking with unconfirmed entries.
For ordinary “keep unfamiliar cats out” use, the standard SureFlap Microchip Cat Flap is the straightforward option. Choose SureFlap DualScan when one cat must stay indoors, SureFlap Connect when you want app-based monitoring, the SureFlap Microchip Pet Door for a larger opening, PetSafe’s Microchip Cat Flap for a high programmed-pet count, Petporte’s Smart Flap for a larger standard opening and optional night mode, or Cat Mate Elite with Timer Control when an app-free timer matters.
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Seven verified models at a glance
These are the distinct models or variants supported by the available manufacturer specifications and current comparison material. “Entry-only” means the flap scans a pet approaching from outside but does not identify which registered pet is leaving.
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| Model | Best fit | Access control | Published opening and power | Important qualification |
|---|---|---|---|---|
| SureFlap Microchip Cat Flap | Routine entry protection | Entry-only | 142 × 120 mm; 4 AA batteries | Confirm your cat’s chip against the current instructions |
| SureFlap DualScan | Different in/out rules for individual cats | Two-way scanning with exit permissions | Standard SureFlap dimensions; verify the exact variant | More suitable than an entry-only flap when one cat must remain indoors |
| SureFlap Microchip Cat Flap Connect | Remote monitoring and controls | Two-way scanning; app functions | Standard SureFlap dimensions; Hub required | The app depends on the separate Hub |
| SureFlap Microchip Pet Door | Large cats or small dogs | Microchip-controlled access | 178 × 170 mm; 4 C cells | Requires a substantially larger cut-out than the standard flap |
| PetSafe Microchip Cat Flap | Many registered cats | Entry recognition plus four-way manual lock | 160 × 160 mm; 4 alkaline, non-rechargeable AA batteries | Designed for common FDX-B 15-digit chips; test metal-door locations |
| Petporte Smart Flap | Larger opening with optional night mode | Microchip entry control | 160 × 160 mm; mains-powered UK model | Supports standard UK/EU 15-digit chips; check excluded formats |
| Cat Mate Elite with Timer Control | App-free timed access | Entry-only in the current comparison | Not stated in the inspected material | Verify the current model’s opening, power and chip list before ordering |
Opening measurements describe the pet passage, not necessarily the hole you cut in the door. A flap can have a generous passage but still require a different cut-out, tunnel or adaptor.
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Check these purchase gates before comparing brands
1. Identify the implanted chip
Microchip flaps do not read every identification chip automatically. PetSafe specifies the common FDX-B 15-digit format for its Microchip Cat Flap and provides a chip-compatibility checker. Petporte also supports standard UK/EU 15-digit chips while excluding some formats. Sure Petcare describes compatibility with common microchips, but its current model instructions should be the final authority.
Ask your veterinary practice for the chip number and technology if you do not have the paperwork. Do not assume that a 15-digit number alone proves compatibility: the encoding standard matters. If the flap cannot read the chip, programming and repeated scanning will not solve the problem.
2. Decide whether you need one-way or two-way discrimination
Most standard microchip flaps protect the inside of the home from unregistered animals entering. They do not know which registered cat is crossing outward. That distinction matters in multi-cat homes: an entry-only product cannot keep a specific cat indoors while allowing another registered cat to go outside.
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3. Measure the cat, then the installation
Measure the widest part of the cat’s shoulders and compare it with the clear passage. The standard SureFlap opening is listed as 142 × 120 mm; the SureFlap Microchip Pet Door is 178 × 170 mm; PetSafe Petporte lists 160 × 160 mm. A cat that technically fits may still refuse a cramped tunnel, especially if it is older, heavy or anxious.
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Also measure the door or wall before purchasing. The Sure Petcare brochure published in 2019 lists a 165 × 171 mm door/wall hole for standard cat-flap models and a 207 × 234 mm hole for the Microchip Pet Door. Those figures are historical brochure specifications, so use the current installation guide for the exact model. Cutting the wrong-sized opening can require replacing the door.
4. Identify the door material
Glass installation is not a normal do-it-yourself cut. The comparison material notes that toughened or double-glazed glass cannot be cut in place; a glazier generally needs to order a new sealed unit with the correct aperture. The 2019 Sure Petcare brochure gives a 212–260 mm glass-hole range for standard models and 300–320 mm for the Microchip Pet Door, but those ranges must be checked against current instructions and the actual unit.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchMetal can affect RFID performance. PetSafe specifically warns that some metal doors interfere with its reader and recommends testing the intended location before installation. Its Microchip Installation Adaptor is listed for metal, glass and brick, and a tunnel extension is available for wall installations. An adaptor may change the required cut-out, so plan the complete assembly rather than buying the flap alone.
5. Compare the complete cost, not just the flap
Prices, stock, bundles and included parts change by country and date, and the supplied specifications do not establish a stable current price table. Add the cost of a Hub, adaptor, tunnel, replacement glass, batteries, a new door or professional fitting where applicable. For a glass, wall or metal installation, the fitting cost can exceed the difference between two flap models.
Model-by-model buying guide
SureFlap Microchip Cat Flap: the basic entry-control choice
The standard SureFlap is aimed at households that want registered pets to enter while unfamiliar animals are refused. Its published clear opening is 142 × 120 mm and it uses four AA batteries. Sure Petcare’s brochure describes the range as using a pet’s existing veterinary identification microchip as an electronic door key; that is company product-brochure wording, not an independent test result.
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Because this is an entry-only design, it is not the answer when a particular cat must be prevented from leaving. Check the current chip list and installation measurements before ordering, especially if the flap will go into glass or a wall. The 2019 brochure’s standard door/wall and glass-hole figures are useful planning references but are not a substitute for the current manual.
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SureFlap DualScan: individual exit permissions without an app
DualScan adds scanning in both directions and manufacturer material lists exit scanning as its defining difference. That enables a household rule such as “cat A may go out, cat B may not,” while still allowing registered cats to come inside. This is the most important functional upgrade over a conventional entry-only flap.
Choose it when the access rule is per cat rather than a whole-door curfew. Confirm the exact variant’s opening, cut-out and battery details before installation; the brochure’s 142 × 120 mm and 165 × 171 mm figures apply to standard SureFlap models generally, and the brochure dates from 2019.
SureFlap Microchip Cat Flap Connect: two-way control with a Hub
Connect is the SureFlap option for owners who want app functions as well as two-way scanning. The Hub is required for those app features, so the total system includes more hardware than a stand-alone flap. App-based monitoring can be useful when you need to check activity while away, but it also introduces another device, a network connection and another compatibility point.
Use the same physical checks as for other standard SureFlap models: the brochure lists a 142 × 120 mm passage and a 165 × 171 mm door/wall hole for standard models. Verify current instructions, included accessories and the exact chip support for the package sold in your region.
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SureFlap Microchip Pet Door: the larger passage
The Microchip Pet Door has a 178 × 170 mm opening, larger than the standard SureFlap passage, and uses four C cells. It is the logical SureFlap variant for a particularly large cat or a small dog that cannot use the narrower opening comfortably.
The larger passage also means a larger structural opening: the 2019 brochure lists a 207 × 234 mm door/wall hole and a 300–320 mm glass-hole range. Treat those as dated planning figures and obtain the current template before cutting. A larger aperture can reduce the remaining strength of a thin door, so a professional assessment is sensible for unusual materials.
PetSafe Microchip Cat Flap: up to 40 programmed cats
PetSafe lists capacity for up to 40 programmed cats, a four-way lock and compatibility with common FDX-B 15-digit microchips. Four alkaline, non-rechargeable AA batteries are specified in the setup instructions. The four-way lock lets you set the whole flap to in-only, out-only, fully locked or normal operation; it does not provide individual exit permissions.
The published opening is 160 × 160 mm. PetSafe also lists a Microchip Installation Adaptor for metal, glass and brick and a tunnel extension for wall fitting. Test the reader at the proposed location before making a permanent cut, because some metal doors can interfere with RFID readings. Program the cat only after confirming that the chip is recognized reliably at the installed position.
Petporte Smart Flap: larger opening and optional night mode
Petporte’s Smart Flap is listed with a 160 × 160 mm opening, capacity for 25 cats, a UK power supply and an optional night mode. It supports standard UK/EU 15-digit chips, while some chip formats are excluded. The night-mode option is relevant when you want a timed household routine without an app, but confirm exactly how the current version implements and schedules it.
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This is a better physical fit than a 142 × 120 mm opening for cats that need more shoulder room, but the stated measurements still need to be compared with your cat’s widest point and the manufacturer’s cut-out template. Check regional power requirements if the product is being imported.
Cat Mate Elite with Timer Control: app-free timed entry
The current comparison identifies Cat Mate Elite with Timer Control as an entry-only product with timer functionality. It suits owners who want a schedule without a Hub or smartphone app. The inspected material does not establish a current opening, battery specification, capacity or complete chip-compatibility list, so those details must be verified on the exact package and manual before purchase.
Do not treat a timer as equivalent to per-cat permissions. A timed entry-only flap can change when access is available, but it does not selectively authorize one registered cat to leave while another remains inside unless the current model explicitly documents that capability.
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- Record the chip. Obtain each cat’s chip number and format from the veterinary record. Compare it with the exact flap’s compatibility documentation.
- Measure the cat. Measure shoulder width and body height, then compare both with the clear passage. Allow room for a collar, cautious gait and a tunnel if the installation is through a wall.
- Mark the mounting height. Position the passage so the cat can walk through rather than climb. Follow the supplied template; do not scale a product photograph.
- Inspect the material. For a solid door, check internal framing and cables. For a wall, plan the tunnel and weatherproofing. For glass, contact a glazier before ordering the sealed unit.
- Test RFID at the location. Especially with metal doors, hold the assembled reader where it will sit and confirm that each chip is detected consistently.
- Make the cut-out only after confirming the template. The pet passage and structural hole are different dimensions on many models.
- Install and seal. Fit the flap squarely, add the specified adaptor or tunnel, and seal gaps against drafts and rain without obstructing the moving door.
- Power and program. Use the specified battery type or mains supply. Register each cat according to the current manual, then test entry and exit permissions separately.
- Train gradually. Hold the flap open at first, reward calm investigation, and let the cat approach at its own pace. Remove temporary training aids only when the cat is using the passage confidently.
Choose by household scenario
| Your requirement | Most relevant verified option | Why | What to confirm |
|---|---|---|---|
| Stop neighborhood cats entering | SureFlap Microchip Cat Flap | Simple entry-only microchip control | Chip format, passage and installation template |
| Keep one cat indoors while another can leave | SureFlap DualScan | Two-way scanning with exit permissions | Exact variant’s settings and dimensions |
| Check activity remotely | SureFlap Connect | App functions with two-way scanning | Hub requirement, network setup and bundle contents |
| Fit a large cat or small dog | SureFlap Microchip Pet Door | 178 × 170 mm passage | Large door, wall or glass cut-out |
| Program a large number of cats | PetSafe Microchip Cat Flap | Up to 40 programmed cats | FDX-B 15-digit chip and metal-door performance |
| Need a 160 × 160 mm opening and night mode | Petporte Smart Flap | Larger opening, optional night mode and 25-cat capacity | UK power, chip exclusions and current mode controls |
| Want a timer without an app | Cat Mate Elite with Timer Control | Timer-based entry operation | Current opening, power and chip specifications |
Troubleshooting common failures
The flap does not recognize the cat
- Recheck the chip format, not just the number of digits.
- Confirm the chip is registered in the flap’s memory and that the battery or mains supply is adequate.
- Test at the installed position. Metal surrounds can reduce RFID performance on some products.
- Ask a veterinary practice to scan the chip if there is any doubt that it is functioning or located normally.
An unfamiliar cat still gets inside
- Check that the flap is in its normal microchip-controlled mode rather than manually unlocked.
- Inspect the closing edge and tunnel for anything preventing a complete latch.
- Review whether the product is entry-only and whether the intruder may be following a registered cat through the opening.
One registered cat needs to stay in
An entry-only model cannot enforce that rule. Use a model with documented two-way scanning and individual exit permissions, such as DualScan, or apply a whole-door manual lock if all cats must remain inside.
The cat refuses to use the flap
- Open or secure the flap temporarily so the cat can learn the route without resistance.
- Use food rewards on both sides and avoid pushing the cat through.
- Check that the tunnel is not too narrow, dark or noisy, particularly with a large opening installed in a thick wall.
The installation does not fit the door
Stop cutting if the template, frame or glazing differs from the plan. Toughened and double-glazed glass generally requires a new sealed unit rather than an on-site cut. A wall or metal-door installation may need a tunnel or adaptor, and those parts can alter the final dimensions.
What this list can and cannot claim
Seven model entries are sufficiently identified in the available specifications: three SureFlap variants, the larger SureFlap Microchip Pet Door, PetSafe Microchip Cat Flap, Petporte Smart Flap and Cat Mate Elite with Timer Control. Another product appears in a comparison as a prey-detection alternative, but the available material does not establish it sufficiently as a verified microchip-cat-flap recommendation, so it is not presented as an eighth pick.
There are no independent, directly comparable test scores or category market-size figures established here. Sure Petcare’s 2019 brochure says that more than 1.5 million products had been sold in 35 countries worldwide; that is a historical company statement, not an independent statistic and not a figure for cat-flap sales alone. Current manuals, regional availability, chip support, prices and included accessories should take precedence over older brochure details.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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