What fits, item by item
SmartDoor Connected Pet Door SmartDoor Connected Medium Pet Door Key
ConfirmedUse the Medium Pet Door Key with the Medium SmartDoor.
United StatesCheck the conditions and source
SmartDoor Connected Pet Door SmartDoor Connected Large Pet Door Key
ConfirmedUse the Large Pet Door Key with the Large SmartDoor.
United StatesCheck the conditions and source
SmartDoor Connected Pet Door SmartDoor Power Adapter
ConfirmedPetSafe documents the optional SmartDoor power adapter for both Medium and Large sizes.
United StatesCheck the conditions and source
All of the chip conditions must line up
Check the door size and animal before looking at the chip number. A supported chip family does not remove the Medium-door and cat-only conditions. Conversely, using a Medium door does not make every implanted chip readable.
- Cat + Medium door + a listed chip format: the documented implanted-chip route.
- Cat + Large door: the Medium-only implant statement does not establish chip access.
- Dog: PetSafe recommends the Pet Door Key route.
PetSafe · www.petsafe.comPetSafe Support · support.petsafe.net
Compare the complete chip identity
Use the implant record to compare both the chip family and format: FDX-B with 15 digits; FDX-A with 10 digits; AVID H; or AVID Encrypted with 9 or 15 digits. A number of the same length is not, on its own, confirmation of the chip family.
If the record does not identify the format, leave compatibility unresolved while obtaining that information. Choosing a key instead is a separate access decision, not evidence that the implant is defective.
PetSafe · www.petsafe.comPetSafe Support · support.petsafe.net
A key is also an option for a chipped cat
PetSafe’s approach troubleshooting describes 3 key sizes. If hand-held testing unlocks the door but the pet’s approach does not, a low pet’s key may sit outside detection; PetSafe suggests trying a larger key in that situation. The Medium and Large package labels should not be treated as an exhaustive replacement-key rule.
Compatibility answers whether an identifier is supported. If the identified key or chip still does not open the door, continue with power and pairing checks in the key-check guide; do not turn an access failure into an unsupported incompatibility verdict.
PetSafe · www.petsafe.comPetSafe Support · support.petsafe.netPetSafe Support · support.petsafe.netPetSafe Support · support.petsafe.net
FAQ
SmartDoor Connected Pet Door frequently asked questions
Each answer stays within the facts and sources shown on this page.
01Which chip formats are listed for cats using the Medium SmartDoor?
PetSafe lists FDX-B 15-digit, FDX-A 10-digit, AVID H, and AVID Encrypted 9- or 15-digit. The list applies to cats using the Medium door, not to every pet and door size.
02Does a supported implant format establish access through the Large door?
No. The documented implanted-chip route is for cats using the Medium door. A paired Pet Door Key is the documented alternative for dogs or cats; use PetSafe’s exact key and pairing guidance rather than inferring chip support for Large.
03Can a Medium-door cat use a collar key instead of implanted-chip access?
Yes. PetSafe documents access for dogs or cats using paired Connected Pet Door Keys. Choose and pair the key using PetSafe’s guidance for the pet’s actual wearing height. PetSafe describes 3 key sizes. Its larger-key suggestion applies when hand-held testing unlocks the door but the pet’s approach does not, and a low pet’s key may sit outside detection. The Medium or Large package label is not an exclusive replacement rule.