Protect your animals with the Zareba 100 Mile AC Low Impedance Fence Charger. This powerful 6-joule energizer controls a variety of animals, including pigs, goats, horses, cows, and more. Besides keeping animals in it will also help to keep predators out. The 100 Mile Charger will power through heavy weeds with its strong output, although a well-kept fence line is ideal. Know that 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 therefore should be protected from weather conditions. Built in the USA, this energizer is tested with a full load at our manufacturing facility and comes with a 2-year warranty. This warranty includes damage from lightning and can be extended to a 3-year warranty by registering online.