Dare DPP-400 Power-Pro Fence Energizer, One Joule Output, Powers Up To 100 AcresShocks through wet and heavy vegetation for the toughest electric fence conditions. Controls mid sized to large animals, exotics and wildlife. Features: full and half power, battery check and voltage indicator. Dual Power: 110V plug in or 12V battery clips included Features: full and half power, battery check and voltage indicator Shocks through wet and heavy vegetation for the toughest electric fence conditions Controls mid size to large animals.