The Classic In-Ground Fence 2 Dog system will give you peace of mind knowing your dog is safe and secure inside his yard. This In-Ground Fence system comes with 2 collars so both dogs in your family can safely play outside together. If you have a rectangular or unique-shaped yard, an in-ground fence might be a great option. Setting up an in-ground fence is a DIY project, so we like to tell pet parents to plan to install your new fence over a weekend. The in-ground fence transmitter has an LCD screen that shows you what the boundary distance is set to and the wire break warning indicator. This kit comes with 500 feet of boundary wire which lets you secure a 1/3-acre yard. If your yard is larger, just purchase more boundary wire to fence in up to a 5-acre yard. The rechargeable receiver collars have 7 levels of adjustable static correction that you can set based on your dog's temperament. The collars also have a tone and vibration level, which is great for when you're training your dog. The receiver collars are also compatible with all PetSafe Pawz Away Pet Barriers (sold separately), so you can keep your dog safe outside and away from off-limit areas inside your home with the same collar. You can add as many pets to this in-ground fence system as you need. Just purchase additional compatible collars for every pet in your family. Your pet deserves the best. Trust PetSafe to keep your pet healthy, safe and happy.