A good door....for a while. The door itself isn't bad but the collar keys are a bit of a pain: 1 they don't seem to be high quality construction and can be flaky in their operation or easily damaged when trying to replace the battery. 2 It's impossible to tell when the battery is going out. There is a little flashy light but it blinks only about once every minute which makes it awkward to notice. 3 My cats managed to loose the key collars...they must have broken off or in one case the two halves fell apart because the cat came home with only the shell of the key. We used the door successfully for 1 - 1.5 years, but over that time had to purchase 4 keys because of the above mentioned issues, and at $30 a pop that adds up. Finally we missed that our one cat's key had gone out again the other cat was staying indoors for the winter, so he managed to break his way in and now the door just swings without latching. We had the previous staywell model with the non-powered keys and I wish they would bring that concept back but just improve it's range. At this point I'm investigating away from Staywell and looking for other manufacturers.

DO NOT BUY IF YOU HAVE RACCOONS COMING IN!!! The functionality of how this locks the door to only allow your cat come in and out does not stop smart raccoons. I have a mama raccoon who knows how to lift the door from the outside and comes inside to eat all the cat food :(

This is a great product. We had a little trouble training the cats but in time turned out to be a great help with our cats.

I do think this cat door is well constructed. I was quite satisfied.