Parmak, Super Energizer 5, 50 Mile Range, Fence Controller, 110120 Volt AC Operation, Low Impedance, Designed Specifically For Large Pastures, Single Or MultiWire High Tensile Fences, Advanced Solid State Circuitry Featuring Parmak’s Exclusive BuiltIn Digital Performance Meter, Shocks Through Wet Weeds Brush, Ideal For Controlled Grazing Of Livestock Including Sheep Predator Control, For Indoor Installation, Charges Over 50 Miles Of Fence, UL Listed