Fi-Shock SS-550X AC Powered Medium Duty Fence Charger, 15 Acre Range High-power, low-cost solid state electric fence charger. Output voltage: 1.2 KV +/- 20 -percent open circuit voltage Uses two 1/16 amp time-delay fuses, with fused panel for downline protection against power surges Weather resistant cabinet. Fence terminals are on the bottom of unit for direct rain protection. Electronically controlled timing. Range up to 15 acres under ideal conditions. Can be used for electric fence containment of pigs, cattle, horses, deer, cows, sheep and goats. One year limited warranty