Features： 1、Principle of Use: High voltage pulse can give animals a sense of electric shock, making them generate a psychological barrier, and then the conditioned reflection is far away from the electric fence. 2、Dual Function: The fence can manage the animals in the fence, block the threat of external species, and prevent wild animals from entering the planting area and damaging crops. 3、Harmless to Humans and Animals: The pulse voltage of the electronic fence is not life threatening to humans and animals and will not be injured by mistake. 4、Reduce Cost: The installation of electronic fence is simple and convenient. You only need to install according to the instructions, and the cost of manual maintenance is low. 5、Widely Use: It is applicable to animal fences, grassland fences, rotational grazing and stocking. It can be enclosed in long and short term, and can be switched and built at will. Specification： Item Type: Electric Fence Charger Material: ABS Product Size: Approx. 17.5 x 14 x 6.3 cm / 6.8 x 5.5 x 2.4 in Weight: Approx. 805 g / 28.3 oz Specification: US110V, 60Hz Effective Area: 40 acres Effective Length: 10 miles Peak Storage Energy Up To: 0.49J Peak Output Energy Up To: 0.3J Maximum Output Voltage: 5.1kv Output Voltage at 500 Ohms: 3.5kv Type: Power Series Purpose: Electronic Fence Power Supply Scope of Application: Farm, Pasture, Temporary Electric Fence System, etc. Applicable Animals: Neutral or fierce nnimals, such as sheep, goats, cattle, wolves and jackals Package List： 1 x Electric Fence host 1 x English Manual