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Your dog means the world to you, so keep tabs on them with the Halo Collar. Teach your dog boundaries and set up virtual fences anywhere, regardless of mobile or GPS signals, to allow your dog ...
An underground fence is an electronic system to prevent pets from leaving a yard. A buried wire around the containment area emits a radio signal to activate the receiver collar. A shock collar on the pet receives these signals. When the pet approaches the buried fence line, the collar makes a warning sound and then gives the pet a harmless ...
In a virtual electric fence system, each animal has a collar with a GPS unit which is set to produce first an audible warning and then a shock as the animal approaches a programmable boundary. Pet fences to control domestic dogs have been used since 1973, and the first system for livestock control was developed by Peck's Invisible Fence Co, now ...
Nofence is a Norwegian company that makes GPS collars for farm animals (cattle, sheep, and goats) that discourage them from crossing virtual fences. [1] [2] Oscar Hovde Berntsen has been working on the idea of virtual fencing, as an alternative to fixed electric fencing, since the 1990s. [3] Nofence was incorporated in 2011. [3]
The system uses battery-powered collars that emit a sound to warn cattle when they are approaching a virtual boundary. If a cow wanders too near, the collar emits a warning noise. If it continues, the cow gets an electric shock of 250-milliwatts . The boundaries are drawn by GPS and exist only as a line on a computer.
New England Patriots quarterback Tom Brady and wide receiver Randy Moss run off the field after Moss' TD catch during the Pats' 59-0 victory at Gillette Stadium Oct. 18, 2009.
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