Plexidor electronic dog doors are operated by an RFID collar key that requires no batteries, is water-tight, and is highly secure with its 1000s of programmable key codes.
A Plexidor RFID Doggie Door will keep unwanted animals like raccoons, skunks, and opossums out of your house and is even secure enough to prevent burglars from entering your home through the pet door. It is safe for pets and children as it will not close if obstructed.
RFID doggie doors are far superior to all other types of electronic pet doors - bar none. In fact, some electronic dog doors that DO NOT use RFID technology will actually open and close unintentionally when running a household appliance like a washer or dryer!