The one with a battery, and the one that names its exception
PetSafe PAC19-15793 Electronic Pet Door Key
A powered RFID key for PetSafe Electronic Pet Doors, battery included, stated to last three to six months and not to work with the SmartDoor Plus.
What you are getting
One RFID key for the PetSafe Electronic Pet Door, with its battery included. $24.93 — the most expensive key on this shelf, and the only one that runs on power.
The only key here with a battery
The Manruta tag is passive epoxy and the Cat Mate key is a magnet; neither has anything inside. This one carries an RFA-67 battery, stated to last three to six months depending on use.
That is the trade. A powered key transmits rather than reflecting, which is how it reaches an electronic door — and it also means a key that stops working twice a year until it is changed. The battery is included with the key.
Up to five pets, and one door it will not open
“Works with all sizes of the PetSafe Electronic Pet Door; not compatible with the SmartDoor Plus.” A maker naming the one model in its own range that this will not open is worth more than a compatibility list, because that is the mistake it prevents.
The door itself accepts up to five pets, so the key is sold as an add-a-pet as much as a replacement.
“Fits most collar ID tags” — the key hangs with the identity tag rather than replacing it. On a cat that already wears a name disc, that matters: one more thing on the ring, not a choice between the two.
Where it sits against the others
- Manruta, 2 tags, $10.99 — $5.50 a key, passive, SureFlap only
- Cat Mate, 2 magnets, $13.99 — $7.00 a key, magnetic, electromagnetic flaps only
- PetSafe, 1 key, $24.93 — $24.93, powered, PetSafe electronic doors only
Three systems, three price levels, and no key opens another maker’s door.
What is not published
No read range and no stated life for the key itself, only for the battery in it.
Availability
Read on the day this page was built: $25 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-06. The live price is at the top of the page.
The questions owners ask
Why does this key need a battery when the others do not?
Because it transmits. A passive tag like the Manruta disc reflects energy the door sends out, which works at short range and needs nothing inside. A powered key sends its own signal, which reaches further and suits a door built around it. The cost is an RFA-67 battery stated at three to six months, and a key that simply stops at the end of it.
Will it work with the SmartDoor Plus?
No, and PetSafe says so on the page: it "works with all sizes of the PetSafe Electronic Pet Door; not compatible with the SmartDoor Plus". That is a maker ruling out one of its own products, which is the kind of line worth reading twice before ordering. All three keys on this shelf publish an exclusion; this is the only one whose exclusion is inside its own brand.
Can I add a second cat to the door?
Yes — the door takes up to five pets, and this key is sold as a replacement or an add-a-pet. Each key carries its own identity, which is the thing a magnet cannot do: the Cat Mate magnets on this shelf open an electromagnetic flap for anything wearing one.
