The PE5B 6 or 12-Volt DC Fence Energizer is suitable small properties. It provides powerful protection, even with heavy weed pressure. Battery-saving mode maximizes battery life. With 0.20 output joules, it powers up to 5 miles or 20 acres of fence. It is suitable for cattle, horses, pigs, and other small pets or nuisance animals. This low-impedance energizer has a highly visible, flashing red light that indicates the energizer is working and powering the fence. Works with steel wire, aluminum wire, and poli-products.