MARK8 Low Impedance 110/120-Volt 30-Mile Range Electric Fence Charger(reflecting); Indoor only; Ideal for livestock or predator control; UL listed (US & Canada) (MADE in USA) Low impedance 110/120-volt 30-mile range electric fence charger Advanced solid state circuitry featuring Parmak's exclusive built-in performance meter, shocks through wet weeds and brush Ideal for livestock or predator control Designed for medium pastures Digital meter shows voltage on fence