Mag 12 SP U.O.The Parmak Solar-Pak 12 solar-powered electric fence charger will operate 14 days without sunlight. This fence charger is weatherproof, portable and rustproof for easy outdoor installation. Ideal for livestock control and farm and ranch use as it is an outdoor model. Low impedance effectively shocks through wet weeds and brush and ranges up to 30 miles of fence.Solar-Pak 12 Key Features:solar poweredbuilt-in performance meteroperates 14 days without sunlightweatherproof, portable, rustproofcharges up to 30 miles of fence100% American madeSpecificationsModelMAG-12-SPWarranty2 yearsRange30 milesJoules Low1.1Joules High3.1 Power Source12V Solar/BatteryFence Voltage - Open Circuit13,500Fence Voltage - 500 ohm6,100Fence Voltage - 100 ohm3,100Note: For proper grounding of ALL Parmak fences, it is recommended that you use three (3) 8' copper ground rods at 10' intervals.