Electronic cat doors have the similar goal of regulating the access of pets in/out of the home. Some electronic doors regulate pets, as well as, keep other nuisance animals out. When shopping and comparing these doors, you will need to understand some key comparative points:
1. Controls Access / Entry Only - These doors allow your cat to enter your home by use of a controlling collar tag, but any animal in the house can leave. The lock works only in one direction (Entry to the home)
2. Controls Access / Entry & Exit - These doors lock in a manner that a pet requires a collar tag to enter, as well as, leave the home, the lock works in both directions.
3. Raccoon Proof Versus Keeps Out Other Cats - Some electronic doors have locking mechanisms that are designed to keep out Raccoons. Raccoons are crafty and have fingers. Other cat doors keep out other feral cats as well as other nuisance animals, but could potentially be opening by Raccoons. The only reliable Raccoon Proof doors available are the Solo Pet Door & the Cat Mate Elite Doors.