Hidden Pet Dog Fence Containment Electric Shock Collar NE#2 Type: Dog Fence Dog Age: Small / Medium / Large Features: This in-ground Pet fencing system is the most reliable, humane & cost-efficient pet containment system available today which help to keep your dog safe from rambling and traffic without taking its freedom. A radio transmitter connected into a power outlet will emit a radio signal along an underground wire. When your dog approaches the boundary, the radio signal will initiate the collar to issue the warning beep first. If your dog continues closer to the boundary, the system will issue a mild shock. If your dog continues further, the system will issue stronger shocks until your dog returns to within the boundary you have set up. Your dog will naturally seek to avoid correction, and is content staying within the areas you designated. Areas that you can created can be easily combined or deactivate...