Expand your Pawz Away Pet Barrier system with extra barriers to protect multiple areas around your home. An unlimited number of barriers will work with your pet's Pawz Away Receiver Collar. Trust PetSafe® to help keep your pet healthy, safe and happy. ONLY COMPATIBLE WITH PAWZ AWAY RECEIVER COLLARS AND YARDMAX® RECEIVER COLLARS; NOT COMPATIBLE WITH ANY OTHER PetSafe®INGROUND FENCE COLLARS OR WIRELESS FENCE COLLARS Waterproof Settings for Multiple Pets Easily Fits in Small Spaces | PetSafe ® Pawz Away ® Pet Barrier Mini Add-A-Barrier