We went with the Pet*Safe wireless system, Play+Stay.
Bummer about Havahart. They seem to only be exiting the wireless dog system.
About Havahart Wireless We apologize for the inconvenience – Havahart® Wireless is no longer available. If you have previously purchased a dog fence system from Havahart® Wireless, we will continue to offer customer support. If you have any questions, don’t hesitate to contact our consumer care department at 1-855-5-HAVAHART.