110 volt, .50 joules output powers to 30 acres, delivers reliable, low-impedance power for properties up to 30 acres Equipped with power surge and Radio interference protection. Perfect small-range, general-purpose energizer for all types of multi-strand fence material Large easy to see pulsing power indicator Tough, impact resistant, ABS plastic case and large, easy grip, power terminal knobs 110-volt fence energizer with 3.2 joules of stored power, charging up to 120 acres of multi-strand fencing with consistent, low-impedance power. Features power surge and radio interference protection, delivering 9,000 volts open line and 4,900 volts at 500 ohms. Equipped with a prominent pulsing power indicator, housed in a tough, impact-resistant ABS plastic case. Offers large, easy-to-grip power terminal knobs and a 3-year warranty covering remote indirect and lightning strikes.