Shop for Pet Supplies & Wildlife at The Home Depot. Stretch the boundaries of wireless dog fencing with the next generation Radial-Shape2 Havahart Wireless Dog Fence-the most advanced do-it-yourself, dog containment system that is easy to use and economical. This is the first wireless fence system to offer a Roaming Area that can expand from 40 ft. up to 400 ft. that is up to 11 acres, with optimal results, and close to 20 times more Roaming Area than provided by the leading brand. Optimal results for maximum distance are dependent on an unobstructed direct line of sight between fence boundary and the system Controller Capable of containing up to 2 dogs (with purchase of additional collar), this wireless dog fence combines breakthrough technology with a stylish, compact Controller. It is easy to install with no need for digging. In about 1 hour you can have your wireless fence up and running and begin training your dog. Havahart Wireless fence systems are manufactured and approved for sale and use in the United States only. For best success with the Radial-Shape2 Wireless Dog Fence, you should be aware that: 1. aluminum siding and heavily wooded areas enclosed in the fence boundary will not work with the Radial-Shape2 Wireless Fence. 2. Extensive landscaping, slopes/hills and metal sheds, metal down spouting and metal garage doors may present challenges to the Radial-Shape2 Wireless Dog Fence. All wireless fence systems face the same challenges.