From the MFG:
This hidden fencing system is among the most reliable, cost-efficient pet containment systems available today. A buried wire transmits a harmless radio signal. When your dog approaches the boundary, the signal causes the dogs collar receiver to deliver a 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 a stronger shock until your dog returns within the boundary you have set up. Your dog will naturally seek to avoid correction, and is content staying within established boundaries.
This Pet Fencing System will keep your dog (or dogs) in your yard and prevent them from running away. The system sends a radio signal through a thin metal wire which is buried just under the surface of ground. This allows the system to contain the dog to specific area without an ugly and harmful above ground electrical wiring system.
The collar reacts to the radio signal when approaching the underground wire from a range of 2 - 3.5 yards (adjustable). It begins with a warning signal and increases to a more frequent static pulse if approaching continues and the dog does not back up. The system has one collar included but this can be expanded with extra collars for more dogs. Adjustment to maximum distance of 4 yards prevents accidental run through when the dogs are playing. The system includes over 980 feet of wire but this can be extended to over 1900 feet without problems. Not to be used with dogs under 6 months. Dogs should weigh between 10-150lbs for a perfect collar fit.
* One collar included, additional collars can be purchased.
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