https://opensourcebridge.scien....ce/wiki/Cat_Flap_Ins
Cat flaps allow you to allow your cat to enter and out of the house without having to open the front door. You can program them to allow your cat to go out at certain times. This is helpful if you don't want your pet to get stressed. The use of a cat flap could make your home more secure and efficient in energy use. However, installing one can be expensive if you don't know what you should look for. Cost of the flap If you have a cat it may be beneficial to install a cat-friendly flap in your home. This