Protect your animals with the Zareba 25 Mile AC Low Impedance Fence Charger. This powerful 1-joule energizer controls a variety of animals, from rabbits and pigs, to horses and cattle. Besides keeping livestock in it will also help to keep predators out. The 25 Mile Charger will power through heavy weeds with its strong output, although a well-kept fence line is ideal. Extreme vegetation and poly products will reduce the overall power of the fence energizer. The more material along the fence line, the harder the energizer must work to pass voltage through the line. This UL-listed energizer will plug into any standard, 2-prong electrical outlet and should be protected from the elements. This energizer is tested with a full load at our manufacturing facility and comes with a 2-Year Limited Warranty which includes damage from lightning.