The PetSafe Smart Door recognizes the collar "SmartKey" on your dog and unlocks to allow your dog access. The sensing range is adjustable up to 3 feet. After your pet passes through, the door will relock again automatically. Animals without the SmartKey are not able to enter. You may have a total of 5 SmartKeys in use at one time.

Petsafe Smart Door Benefits

• Electronic SmartDoor is available in Small and Large sizes and fits standard doors from 1.5" to 2" thick.
• Door accommodates up to five pets (additional SmartKey sold separately), so pet owners can program up to 5 dog/cat collar key codes into the door.
• There are 250 different door codes, ensuring your door's individuality from neighboring doors.
• Battery powered - requires 4 D Cell batteries - freeing the home of unwanted cords.
• 3 easy-to-set entry modes: Locked, Unlocked, and Automatic Access.
• Tapered flap creates tight weather seal. 2 layer Polycarbonate flap for increased insulation and durability.
• SmartKey conveniently fits on pet's everyday collar and only weighs .64 ounces.
• Smart Door activation via SmartKey ranges from 6 inches to 3 feet and can be easily adjusted by pet owner.