Dogtek EF-4000 Electronic Dog Fence System

The EF-4000 is an invisible dog fence which enables you to keep one or more dogs in complete freedom within a perimeter defined by you without the need for an ugly containment fence. An unlimited number of receiver collars can be used with one perimeter wire so you can contain as many dogs as you wish safely in the same area. The EF-4000 is adaptab[Read More]