Model 4400 Low Impedance Fencer shocks through long fences up to 100 miles of clean fence through heavy wet weeds for shorter distances and controls all types of animals even predators. This model includes the Storm Guard Lightning Protection Module a metal cabinet and a flashing lamp indicating operation. UL listed. 6 joule 115VAC 60 cycle 1 second pulsed DC output. Wt. 9.5 lbs.