Received in January 2026 from Amazon, used for about two weeks. I am selling it because I no longer need it after purchasing it, but I think it is a convenient pet door. *Disinfected with alcohol *Operation confirmed The tag attached to the collar was removed once and then reattached for listing, so there are small scratches on the collar hardware. You can also remove it again and reattach it to your own collar. Includes: - Original box (with scratches, etc.) - 1 Smart Door - 2 Collars with tags - Included: 4 long screws (unused), 5 screw caps (unused) - Separately purchased: 4 short stainless steel screws - Instruction manual (English) This is everything. Requires 4 AA batteries (sold separately). - Bonus: Test alkaline AA batteries used for about 2 weeks (please let me know if you don't want them) ⚠️The included short screws were also present, but I can only find 3. I am including 4 separately purchased screws of the same dimensions (the screw head is slightly different). *If you wish, I can also include the original 3 short screws (unused). ⚠️Upon closer inspection, there are fine scuff marks on the door part (there were quite a few from the beginning). *Will be sent via Mercari delivery in the original box. This is a door that unlocks and allows passage only when a cat wearing the tag approaches. There are 4 modes, which can be selected from the pet door buttons. The door is large enough for larger cats to pass through. Outer frame: Approx. 30cm x 26cm Entrance/Exit: Approx. 19cm x 20.5cm We will only respond to initial defects. There are no noticeable scratches, but this is subjective, and we would like to sell it to someone who understands that it is a used item. Please refrain from purchasing if you are sensitive. Please forgive any minor oversights.