Keep your pets out of flower beds, water features, and other outdoor spaces with the PetSafe Pawz Away Outdoor Pet Barrier system. The system comes with a cleverly disguised transmitter that blends into your landscape plus a receiver collar for your pet. When your pet enters the barrier zone you set up, the transmitter sends a safe static correction to his receiver collar. The system has a wireless setup option that protects a circular area up to 16 feet away. You can also create a custom shaped barrier using up to 150 feet of boundary wire (sold separately). You can add an unlimited number of pets to the system if theyre wearing a PetSafe Pawz Away Receiver Collar (additional collars sold separately). You can also set up an unlimited number of off limits areas with additional collars. Trust PetSafe to help keep your pet healthy, safe and happy. Features: PROTECT OUTDOOR SPACES: This cleverly designed pet barrier keeps your pets away from landscaping, pools, furniture and other places you want to them to avoid,UNLIMITED AREAS OF PROTECTION: Keep your cats and dogs away from an unlimited number of areas with the purchase of additional Pawz Away barriers,2 SETUP OPTIONS: Wireless setup protects a circular area up to 16 feet away, or you can create a custom-shaped barrier using up to 150 feet of boundary wire (sold separately),SAFE CORRECTION: When your pet enters the off limits area, the transmitter sends a safe static correction to their receiver collar,ADD-A-PET: An unlimited number of pets can be added to the system if theyre wearing a PetSafe Pawz Away Receiver Collar (additional collars sold separately),LIGHTWEIGHT, WATERPROOF RECEIVER COLLAR: Designed for dogs over 5 pounds with neck sizes between 6 to 28 inches,WATERPROOF TRANSMITTER: Disguised as a rock, the transmitter blends seamlessly into your landscape,COMPATIBLE PRODUCTS: Pawz Away Extra Indoor/Outdoor Collar (PWF00-13664), Pawz Away Indoor Pet Barrier (ZND-1200), Pawz Away Mini Pet Barrier (PWF00-13665), Pawz Away Threshold Pet Barrier (PWF00-14406), YardMax Rechargeable In-Ground Fence (PIG00-11115) YardMax Rechargeable In-Ground Fence Rechargeable Collar (PIG00-11116)