Rexby Smart Pet Door Microchip Review 2026

Your cat keeps sneaking into the neighbor's house. Your dog won't stop letting the local raccoon family feast from the food bowl. You've tried everything—closing doors, timing feeding windows, even installing a baby gate that your determined golden retriever treats like a parkour obstacle. The real problem isn't pet access control; it's that you need a way to let only YOUR animals inside while keeping everything else out. A smart pet door with microchip recognition solves this mess, but the market is cluttered with overpriced gadgets and underpowered knockoffs that fail after six months.

The Rexby Smart Pet Door with microchip recognition sits at the middle of that spectrum—not the cheapest option, not the premium tier, but genuinely worth considering if you're tired of DIY pet-containment theater. With a 4.3-star rating across 500+ Amazon reviews, it's proven itself in real homes. July is actually peak pet door season (adoption shelters get busy, summer vacations mean house guests with pets, and outdoor living is at peak importance), so this timing makes sense to evaluate whether Rexby's solution justifies its price tag.

Pros & Cons

Pros

✓ Microchip recognition is genuinely reliable—it reads your pet's existing microchip without needing a separate collar tag, meaning you don't have to retrain your pet or buy additional equipment. Real reviewers consistently praise the 'set and forget' simplicity.
✓ The door's weatherproofing actually holds up. Multiple reviewers mention using it through winter and heavy rain without water pooling inside or the mechanism failing, which is rare at this price point.
✓ Battery backup for 24 hours keeps the door functional during power outages, a feature many cheaper models skip entirely. You won't come home to a locked-out pet if your WiFi drops.
✓ Size flexibility accommodates most standard dog and cat door openings (8.5" x 7.5" flap), meaning you can likely retrofit it into existing door frames without renovation costs.

Cons

✗ Setup requires a smartphone app, and the WiFi connectivity has spotty reliability according to 15-20% of reviews. Some users report losing connection weekly, forcing manual override mode—that defeats half the purpose.
✗ The price sits around $200-$300 depending on bundle options, which is 40-60% more expensive than manual microchip-only doors from brands like SureFlap. The 'smart' features (app alerts, scheduling) justify some premium, but not all of it for budget shoppers.

Our Verdict

The Rexby Smart Pet Door is solidly above average—the microchip recognition works, the build quality outlasts competitor models at similar price points, and the battery backup is a legitimately useful safety feature. The 4.3-star rating reflects a product that solves its core problem reliably. However, at $200+, you're paying for convenience features (app notifications, remote scheduling) that aren't critical if you're primarily trying to stop unwanted animals from accessing your pet's food and space. If WiFi reliability matters to you or if your budget is tight, a traditional microchip-only door like SureFlap ($80-120) does the essential job without smart features. Only buy Rexby if you specifically want app-based monitoring and scheduling capabilities—if you just want something that works, cheaper options exist and work just fine.

Frequently Asked Questions

Will the Rexby door work with my pet's existing microchip?

Yes, if your pet was already microchipped (which most adopted animals are), the Rexby recognizes standard 125kHz and 134.2kHz microchips without additional hardware. You don't need to buy a collar tag or new microchip. Registration is simple—scan your pet's microchip with the door's built-in scanner during setup, and it stores the ID. This is one of the biggest advantages over cheaper doors that require visual collar tags.

Does the smart app actually work reliably, or will I lose connection constantly?

It depends on your WiFi strength. Reviewers in homes with strong 5GHz WiFi networks report zero issues. Those with weak signals or 2.4GHz-only networks experience frequent dropouts (roughly 1-3 disconnects per week based on negative reviews). If your router is near the pet door entrance, you'll be fine. If the door is on the opposite end of your home, expect frustration. The door functions manually when disconnected, but the app convenience disappears—which is partly why you're paying the premium.

Is Rexby worth $250+ compared to a $100 SureFlap door?

Honest answer: not for everyone. SureFlap's classic microchip door does the core job (selective pet access) just as well and costs one-third the price. Rexby's extras (app alerts when pets enter/exit, remote locking, adjustable access schedules) appeal to remote workers, pet parents who travel, or those managing multiple pets with different feeding times. If you need only basic exclusion (keep raccoons out, let your cat in), save the $150 and buy SureFlap. If you want real-time notifications and remote access, Rexby's premium is defensible—barely.

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