Feature 1、Principle of Use: The high voltage pulse can give the animal a sense of electric shock, so that the conditioned reflex is far away from the electric fence after it produces a psychological barrier. 2、Dual Function: Electric fence charger is used to manage animals in the pen and block the threat of external species, providing you great using experience. 3、Harmless to Humans and Animals: Impulse voltage is not life threatening to humans and animals. Easy installation, low labor maintenance cost. 4、Dismantle and Build on Demand: Animal fence, grass field fence, rotary grazing, long term and short term enclosures can be switched and built at will. 5、Applicable Scenes: Used to raise medium and large animals or poultry such as sheep, goats, cattle, etc., and prevent the invasion of wild animals outside the area. Item Type: Electric Fence Charger Material: ABS Color: As Pictures Shown Weight: Approx. 630g / 22.2oz Product Size Without Hooks: Approx. 14.5x10.5x4.5cm / 5.7x4.1x1.8in Product Size with Hook: Approx. 16.5cm / 6.5in Consumption: 0.023 A/H Provided Power Vacuum: 1.8J 500 Ohm Power Output: 1J Effective Length: Approx. 20km / 21872yd Effective Area: 25km² / 2500ha Type: Power Series Application: Power Supply for Electronic Fence Scope of Application: Farms, Ranches, Temporary Electric Fence Systems, etc. Applicable Animals: Neutral or Ferocious Animals, such as Sheep, Goats, Cattle, Wolves and Jackals, etc. Package List 1 x Electronic Fence Host 1 x English Manual