Metal door owners beware
We have a metal door and the cat door does not want to work...we cut out the door as the instructions listed and put the metal squares in the key for the cats collar but our cats have to get so close to the door before it works...and I think the scanning time is limited...you have to be really quick to hit the door to start the scan process and then get the key on the cats collar just right and within 3-4 seconds...if you hit the door too many times it goes into a hibernation mode and then you have to wait for a full 60 seconds before you hit the door again. I would hope that it would work better in a non-metal door but I can't say for sure....
ProsI like the idea that it will keep the racoons out
ConsThe way it functions in a metal door.