We have had such a cat-flap for years..What gives ?
Hi
I installed such a flap from a British producer 2-3 years ago atleast.
I think they must be behind the times"over-there.."
BTW: I feel sorry for you that have to live in a place where you cant let your cat out. Need I remind you that cats are natural out-door animals that do pest-control in their near area?