Automatic Pet Door for Cats and Small Dogs

The selling price is set for cash on delivery, with an estimated cost of around 6,000 yen for the Kanto region.
However, if you agree, direct hand-to-hand exchange is also possible. (We will meet at a midpoint geographically, demonstrate operation on the spot, take a photo of the exchange, and the buyer will promptly leave a review on Mercari after taking the item home.)
I believe this would be the best arrangement. If this works for you, please leave a comment on this site.
Reason: Although lightweight, the item is 175cm long. Shipping disassembled would be expensive.
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Benefits:
?The quiet opening and closing sound allows owners to sleep soundly.
?Prevents stray cats without magnets from entering.

?If you plan to use this as an indoor door, we can also sell just the opening/closing mechanism. (You will need to cut a hole in your indoor door the size of the blue opening/closing part of this product. The price will be reduced.)

?It's powered by an outlet, so there's no need to worry about batteries running out.

Overview: Opens and closes automatically in response to magnets. Operation confirmed. It closes slowly.
Install with the red lamp facing indoors, placed in the sliding door rail.
Height is adjustable with screws on the top sides. Applicable sliding door height: 175-200cm.

Dedicated Magnet: Not included this time as it was lost.
It is available as an outlet item for 1,200 yen each.
＞https://sanell.ocnk.net/product/357

Product Introduction: https://sanell.ocnk.net/product/389

----- Please note: Cash on delivery! *Around 6,000 yen for the Kanto region ------

You can also make your own magnet, but the response speed may be inconsistent.

＜Method＞Buy small donut-shaped magnets from a 100-yen shop. Tie the magnet to your cat's collar with a thick wire, ensuring the magnetic side faces the door and the magnet doesn't rotate. → Wrap the wire with tape to disperse the magnetic force.

Note) Wire length: Depending on the cat's size and the distance from the door base, determine the optimal height for opening and closing by testing first.