Model: ZH2KW Rated Power: 2000 Watts Maximum Power: ~ 2500 Watts Type: 3 Blade Upwind Rotor Diameter: 3.6 m (12 ft.) Start-up Wind Speed: 2.5 m/s(5.6 mph) Cut-in Wind Speed: 3m/s (6.7mph) Rated Wind Speed: 10 m/s(22mph) Cut-Out Wind Speed: None Furling Wind Speed: 18 m/s (40mph) Max. Design Wind Speed: 50 m/s (112mph) Blade Pitch Control: None, Fixed Pitch Over speed Protection: Auto Furl Gearbox: None, Direct Drive Temperature Range: -40 to +60 Deg. C (-40 to +140 Deg. F) Generator: Permanent Magnet Alternator Output Form: 48 VDC Nominal . Wooden case.