Petsafe Replacement Collar Keys & PetSafe Batteries for PetSafe Smart Door

PetSafe Smart Door Key & Battery replacement parts Activates the PetSafe Electronic Smart Door Smart Door programs up to 5 RFID collar keys (Water-resistant, not waterproof)  Fastens onto your pet's collar  Battery pack comes in a set of 2 The PetSafe smart key and battery work for the PetSafe Electronic Smart Door. Whether you need an entire replacement set or just a new battery for your dog collar key, you can find them here. The PetSafe Smart Door is a collar-activated dog door that programs up to 5 RFID keys at one time, so this is an excellent solution if you have multiple pets. For your convenience, the PetSafe battery pack comes with two to accommodate multiple pets or provide a backup. The low battery indicator will flash red when the battery needs to be changed. You can also browse other PetSafe products. Features: SmartKey unlocks the door for your pet and fits most collar ID tags.  Uses RFID technology to send a signal to the SmartDoor to lock and unlock the flap; h