The PetSafe SmartDoor SmartKey is for use with the automatic SmartDoor for dogs. It is extremely light weight so that even the small dogs can wear it. The SmartKey is only 1-1/4 inch tall and 1 inch wide and weighs less than 1 ounce.
The SmartDoor SmartKey can be attached to your pets existing collar as long as it is 3/4 inches wide or smaller. The key comes in only black and uses and RFA-67 battery that screw into the collar making it more water proof. Limited lifetime warranty on the PetSafe SmartDoor SmartKey. Comes in black.
One size key. Multiple pets can use your PetSafe SmartDoor.
