About the PetSafe SmartDoor Plus Pet Door
The PetSafe SmartDoor Plus pet door is an innovative electronic pet door that uses radio-frequency identification (RFID) technology to let your pet come and go as it pleases. Only the pets wearing the SmartDoor Plus Key have access to the door, assuring security and keeping out strays and wild animals. The SmartDoor Plus pet door is also programmable so that you can set timing modes in four different options: in only, out only, in and out or no access. You can finally rest easy knowing that your pet's access is set to your specifications without you having to be at home. It comes in small and medium, great for cats and small to medium sized dogs.