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The DogTek ef-4000 electric dog fence comes standard with extra durable 18-gauge dog fence wire for longer life. It is also the only invisible dog fence system that allows you to adjust the size of the warning zone as well as the size of the correction zone. Most other systems only allow adjustment to the correction zone.
The DogTek fence collar features a warning beep and 8 static-shock correction levels from which to choose. After some practice with the DogTek electric fence many dogs will begin to respond to the warning beep alone, without need for static correction.
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