Don’t hesitate to contact their customer service if you ever have problems with it. They’ve helped with things no other company would. For example, one of my cats figured out how to open the door when it was locked (they’re not allowed back outside at night). I sent them a video of the cat escaping and they sent me a new, modified door that fixed the problem. I couldn’t believe they did that.

https://www.surepetcare.com/en-US

My pet door just reads their microchips. You can get a collar tag if they’re not chipped.

Is there a reason you don’t want to make a penetration through your roof? I make holes in roofs for solar installations and there are reliable ways of flashing whatever is running through the hole.

Are the checks really random? If not, what would trigger one?

Found the manager