The PetSafe Microchip Cat Door Key Fob allows cats without microchips (or cats whose microchip is not compatible) to use the PetSafe Microchip Cat Door.
The PetSafe Microchip Cat Door Tunnel Extension allows the PetSafe Microchip Cat Door to be installed into thicker doors or walls, adding 2 in. to the overall depth with each tunnel.
Whenever your dog – or your neighbor’s dog – barks, he will hear a safe, high-pitched sound (inaudible to most humans) that will cue him to stop his annoying habit.