The PBX200 6 or 12-Volt DC Fence Energizer is fast and easy to set up. It provides powerful protection, even with heavy weed pressure. Battery-saving mode maximizes battery life. With 1.9 output joules, it powers up to 50 miles or 165 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.