Contain, track and train in one versatile system. DE Systems Border patrol is 3 products in one. Train your dog in a range up to 2 miles. Keep your dog in the yard with the wireless fence. The built-in GPS will allow for short range tracking of your dog within the fence barrier you create. The Border Patrol TC1 is completely portable. Take it with you while vacationing, camping and visiting family and friends. With no wire to bury your fence can be up and running in minutes. .