400W Helix Wind Turbine Windmill Turbine Generator Kit with 3 Blade withController

  
Specification Condition: New Controller System: Electromagnetism Starting Wind Speed: 2.5m/s Cut-in Wind Speed: 2.5m(98inch)/s Rated Wind Speed: 18m/s Max Instantaneous Wind Speed:? 40m(1575inch)/s The Instantaneous Maximum Wind Speed:? 45m(1772inch)/s Blades Quantity: 3 (with Different Colors) Diameter of Blades: 0.6m/24inch Blades Height: 0.8m/31inch Speed Regulation: Automatic Rated Voltage: 12V/24V Rated Power: 400W Max Power: 450W Generator Protection Grade: IP67 Work Environment Temperature: -40-+60?