This is great product for your pet, The latest in programmable infra-red technology ensures that this electronic pet door opens for your pet, and your pet only. Unlike magnetic doors which will respond for every animal who has a key, this door will only accept the digital code transmitted by the collar key that comes with it.
It also features a four-way manual security lock: open in only, open out only, open both ways or locked both ways.
Universal fitting adapts for doors, walls and windows.
find this product here