Description Functional features.1Invisible and environmental protection - the wire is buried underground, not occupying the place, not affecting the appearance, giving the dog more freedom.2Progressive tone stimulation - When the dog approaches the boundary, a warning sound will be issued first. If the approach continues, the system will emit a slight shock.3, pulse proportional stimulation - humane high-tech design, vibration intensity with the distance of the dog close to the boundary line, the closer the dog is to the boundary line, the greater the vibration intensity.4, built-in speed detector - the faster the dog moves, the higher the level of intensity issued.5, wide range of control - up to 5000 square meters, equivalent to a soccer field so large Oh, and variable range, quite flexible.6, safe and reliable - once the buried wire is damaged, the wire damage indicator will issue a loud warning and flash. And there is a lightning protection device on the converter, which can avoid lightning strikes.Six features 1, invisible and environmental protection - the wire is buried underground, does not occupy the place, does not affect the appearance, giving the dog more freedom.2Progressive tone stimulation - When the dog approaches the boundary, it will first sound a warning sound. If the approach continues, the system will emit a slight shock.3, pulse proportional stimulation - humane high-tech design, vibration intensity with the distance of the dog close to the boundary line, the closer the dog is to the boundary line, the greater the vibration intensity.4, built-in speed detector - the faster the dog moves, the higher the level of intensity issued.5, wide range of control - up to 5000 square meters, equivalent to a soccer field so large Oh, and variable range, quite flexible.6, safe and reliable - once the buried wire is damaged, the wire damage indicator will issue a loud warning and flash. And there is a lightning protection device on the converter, which can avoid lightning strikes.