# High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control: specs and price compared

A sourced, side-by-side comparison of the High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) (High Tech Pet) 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 | High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) | Cat Mate 355 Elite Microchip Cat Flap with Timer Control |
| --- | --- | --- |
| US price | $474.99 | $99.99 |
| Brand | High Tech Pet | Cat Mate (Pet Mate Ltd) |
| Activation type | Ultrasonic pet-worn collar key (waterproof MS-5 transmitter) with directional sensing that responds only to direct approach — not microchip | Microchip (reads pet's implanted microchip directly; no separate key/disc required) |
| Flap opening | 12.25 in W x 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 | AC adapter (110V) standard; optional rechargeable battery backup available as an add-on | 4 x AA (not included); approx. 12 months life |
| Locking modes | 4 settings: full access, in-only, out-only, closed & locked | 4-way: in & out, in-only, out-only, locked |
| Pets supported max | 1 | 9 |
| Weatherproofing | "100% airtight" wind/weatherproof seal rated for hurricane-force winds | — |
| Curfew timer | No | Yes |

## Key differences

- Activation type: High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) Ultrasonic pet-worn collar key (waterproof MS-5 transmitter) with directional sensing that responds only to direct approach — not microchip 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: High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) 12.25 in W x 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: High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) AC adapter (110V) standard; optional rechargeable battery backup available as an add-on vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 4 x AA (not included); approx. 12 months life
- Locking modes: High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) 4 settings: full access, in-only, out-only, closed & locked vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 4-way: in & out, in-only, out-only, locked
- Pets supported max: High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) 1 vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control 9
- Curfew timer: High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) No vs Cat Mate 355 Elite Microchip Cat Flap with Timer Control Yes

## Sources

- High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount): https://www.hitecpet.com/collections/todays-specials/products/autpetdoorfo (hitecpet.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/hightechpet-power-pet-px2-vs-catmate-355-elite-microchip/
Cite: Per The Front Desk Review, High Tech Pet Power Pet PX-2 Large Automatic Pet Door (Standard Door Mount) ($474.99) 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/hightechpet-power-pet-px2-vs-catmate-355-elite-microchip/
License: CC BY 4.0.