Please pay with STRIPE. Our prefered payment provider. Let your furry friends come and go with the PetSafe Electronic SmartDoor. Never worry about uninvited guests sneaking in because the flap only locks and unlocks when it senses the SmartKey on your pets ID collar. Easily program your pets entry and exit with the automatic setting. You can also set the door to be fully locked or fully unlocked. The SmartDoor is great for multi-pet households because it works with up to 5 different SmartKeys that you can customize for each pet (one programmed SmartKey is included). Installation is a simple do-it-yourself project. The door fits into standard-size paneled, wood, metal and PVC doors 1 in - 2 in thick. Once installed you can program the electronic door in minutes. PetSafe brand is here to help you and your pet live happy together.