PetSafe SmartDoor White Dog Door Size:Large: 16.125" x 23.625" Adapted phosphorus levels to help

Adapted phosphorus levels to help support renal health

chicory root

Exclusive nutrients help support vitality and healthy aging

niacin supplement

antioxidants and omega fatty acids for results you can see &ndash

PetSafe SmartDoor White Dog Door Size:Large: 16.125" x 23.625" Adapted phosphorus levels to helpDescription Using radio frequency technology, the SmartDoor reads the unique signal of a SmartKey worn on your pet's collar and triggers the battery power driven flap to unlock. When the SmartDoor no longer senses your pet's SmartKey, the flap automatically locks back into place.<br><br>The SmartDoor can detect up to five programmed SmartKeys and also operates in two other modes: fully locked mode and unlocked mode. Locked mode does not allow entry or