Rated Output: 2KW Max Output: 2.5KW Generator: Permanent magnet generator Rated output voltage: 120V Startup wind speed:2m/s (5.6 mph) Cut-in wind speed: 3 m/s (6.7 mph) Rated wind speed: 9m/s (20.1 mph) Security wind speed: 16m/s Number of blade: 3 Material of blade: Glass fiber Blade Diameter: 3.2m Speed protection: Automatic Leaned Rated Rotating Speed: 400r/min Wind Energy Transforming Rate: 0.40Cp Pole Diameter: 140*3.5 steel tube Tower height: 9m Work temperature: -40degrees~~+60degrees Allocated battery:12V200AH, 10pcs Controller :inverter , controller , charger True Sine Wave