AMA BT300 Ranch Energizer for Enclosures with 12/230Volt Power Supply, Maximum Fence Length 20Km, Charging Energy 2 Joule Volt: 12/230V Charging Current: 3J Maximum Discharge Current: 2J Maximum voltage: 9,900V Voltage at 500OHMS: 5,000V Current consumption: 120mA Maximum length with strong vegetation: 4km Maximum length with little vegetation: 8km Maximum length without vegetation: 20km AMA Code: Original code: 91912 AT