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PetSafe
PetSafe SmartDoor Connected Electronic Pet Door
$349.99
Best Electronic Pet Doors · head-to-head
PetSafe SmartDoor Connected Electronic Pet Door vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control
A sourced, side-by-side comparison. Cat Mate 355 Elite Microchip Cat Flap with Timer Control is cheaper at $99.99. Every spec and price links to its source.
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Cat Mate (Pet Mate Ltd)
Cat Mate 355 Elite Microchip Cat Flap with Timer Control
$99.99Cheaper
Which is better: the PetSafe SmartDoor Connected Electronic Pet Door or Cat Mate 355 Elite Microchip Cat Flap with Timer Control?
On the specs we track, they're closely matched. The Cat Mate 355 Elite Microchip Cat Flap with Timer Control is the cheaper at $99.99.
See PetSafe SmartDoor Connected Electronic Pet Door on Amazon See Cat Mate 355 Elite Microchip Cat Flap with Timer Control on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | PetSafe SmartDoor Connected Electronic Pet Door | Cat Mate 355 Elite Microchip Cat Flap with Timer Control |
|---|---|---|
| US price | $349.99 | $99.99 |
| Brand | PetSafe | Cat Mate (Pet Mate Ltd) |
| Released | — | — |
| Activation type | Pet Door Key (collar tag) on both sizes, or microchip (Medium size only; reads FDX-B/15-digit, FDX-A/10-digit, AVID H, and AVID Encrypted formats) | Microchip (reads pet's implanted microchip directly; no separate key/disc required) |
| Flap opening | Medium 7.1 in W x 7.8 in H; Large 11.9 in W x 16.1 in H | 7 1/16 in W x 8 1/16 in H |
| Door wall thickness | Non-metal doors up to 2 1/4 in thick; metal doors up to 1 3/4 in with adaptor; multi-pane glass up to 1 3/4 in (Medium only) | Self-lining up to 100 mm (4 in); wall liner accessory available for thicker walls |
| Battery type | Medium: 4 x C-cell alkaline; Large: 4 x D-cell alkaline (or optional SmartDoor Power Adaptor, sold separately) | 4 x AA (not included); approx. 12 months life |
| Locking modes | Remote lock/unlock via My PetSafe app, multi-point locking mechanism, individual per-pet schedules | 4-way: in & out, in-only, out-only, locked |
| Pets supported max | — | 9 |
| Weatherproofing | Dynamic weather sealing | — |
| Curfew timer | Yes | Yes |
Sources — PetSafe SmartDoor Connected Electronic Pet Door: petsafe.com (verified 2026-08-05). Cat Mate 355 Elite Microchip Cat Flap with Timer Control: closerpets.com (verified 2026-08-05).
What's the difference between the PetSafe SmartDoor Connected Electronic Pet Door and Cat Mate 355 Elite Microchip Cat Flap with Timer Control?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Activation type: PetSafe SmartDoor Connected Electronic Pet Door Pet Door Key (collar tag) on both sizes, or microchip (Medium size only; reads FDX-B/15-digit, FDX-A/10-digit, AVID H, and AVID Encrypted formats) vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control Microchip (reads pet's implanted microchip directly; no separate key/disc required)
- Flap opening: PetSafe SmartDoor Connected Electronic Pet Door Medium 7.1 in W x 7.8 in H; Large 11.9 in W x 16.1 in H vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 7 1/16 in W x 8 1/16 in H
- Door wall thickness: PetSafe SmartDoor Connected Electronic Pet Door Non-metal doors up to 2 1/4 in thick; metal doors up to 1 3/4 in with adaptor; multi-pane glass up to 1 3/4 in (Medium only) vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control Self-lining up to 100 mm (4 in); wall liner accessory available for thicker walls
- Battery type: PetSafe SmartDoor Connected Electronic Pet Door Medium: 4 x C-cell alkaline; Large: 4 x D-cell alkaline (or optional SmartDoor Power Adaptor, sold separately) vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 4 x AA (not included); approx. 12 months life
- Locking modes: PetSafe SmartDoor Connected Electronic Pet Door Remote lock/unlock via My PetSafe app, multi-point locking mechanism, individual per-pet schedules vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 4-way: in & out, in-only, out-only, locked