# SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control: specs and price compared

A sourced, side-by-side comparison of the SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) (SureFlap (Sure Petcare)) and Cat Mate 355 Elite Microchip Cat Flap with Timer Control (Cat Mate (Pet Mate Ltd)) among electronic pet doors. Cat Mate 355 Elite Microchip Cat Flap with Timer Control is the cheaper of the two at $99.99.

## Side by side

| Spec | SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) | Cat Mate 355 Elite Microchip Cat Flap with Timer Control |
| --- | --- | --- |
| US price | $278.25 | $99.99 |
| Brand | SureFlap (Sure Petcare) | Cat Mate (Pet Mate Ltd) |
| Activation type | Microchip (reads pet's implanted RFID microchip; works with all common microchips worldwide); includes 1 RFID collar tag for non-microchipped pets | Microchip (reads pet's implanted microchip directly; no separate key/disc required) |
| Flap opening | 7.5 in W x 6 11/16 in H | 7 1/16 in W x 8 1/16 in H |
| Door wall thickness | — | Self-lining up to 100 mm (4 in); wall liner accessory available for thicker walls |
| Battery type | 4 x C-cell (not included); up to 12 months life, low-battery indicator | 4 x AA (not included); approx. 12 months life |
| Locking modes | Manual lock with in-only setting, selective exit permissions, plus curfew (lock/unlock at scheduled times) | 4-way: in & out, in-only, out-only, locked |
| Pets supported max | 32 | 9 |
| Weatherproofing | — | — |
| Curfew timer | Yes | Yes |

## Key differences

- Activation type: SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) Microchip (reads pet's implanted RFID microchip; works with all common microchips worldwide); includes 1 RFID collar tag for non-microchipped pets 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: SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) 7.5 in W x 6 11/16 in H vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 7 1/16 in W x 8 1/16 in H
- Battery type: SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) 4 x C-cell (not included); up to 12 months life, low-battery indicator vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 4 x AA (not included); approx. 12 months life
- Locking modes: SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) Manual lock with in-only setting, selective exit permissions, plus curfew (lock/unlock at scheduled times) vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 4-way: in & out, in-only, out-only, locked
- Pets supported max: SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) 32 vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 9

## Sources

- SureFlap Microchip Pet Door (Large, for Cats & Small Dogs): https://www.surepetcare.com/en-us/pet-doors/microchip-pet-door (surepetcare.com, verified 2026-08-05)
- Cat Mate 355 Elite Microchip Cat Flap with Timer Control: https://closerpets.com/products/elite-microchip-flap-timer-control (closerpets.com, verified 2026-08-05)

Canonical: https://frontdeskreview.com/gear/electronic-pet-doors/sureflap-microchip-pet-door-vs-catmate-355-elite-microchip/
Cite: Per The Front Desk Review, SureFlap Microchip Pet Door (Large, for Cats & Small Dogs) ($278.25) vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control ($99.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/electronic-pet-doors/sureflap-microchip-pet-door-vs-catmate-355-elite-microchip/
License: CC BY 4.0.