Specifications(1000W) Type: 3 Blade Upwind Rotor Diameter: 2.7m Start-up Wind Speed: 2.5m/s (5.6 mph) Cut-in Wind Speed: 3 m/s (6.7 mph) Rated Wind Speed: 9m/s (20.1 mph) Rated Power: 1000 Watts Maximum Power: ~ 1300Watts Overspeed Protection: Auto Furl Temperature Range: -40 to +60 Deg. C (-40 to +140 Deg. F) Generator: Permanent Magnet Alternator Output Form:48 VDC Nominal