Green Energy---600W Wind Turbine Model Number: FD2.8-600WRotor Blade Diameter: 2.8mNumber of Blades: 3pcsMaterials of Blade: Glass FiberRated Rotation Speed: 400(r/m)Type of Generator: Permanent-magnet 3 Phase ACRated Power: 600WMax Power: 750WOutput Voltage: 24vCut-in Wind Velocity: 3(m/s)Working Wind Velocity: 3-25(m/s)Survival Wind Velocity: 40(m/s)Monopole Tower Height: 6mOutput controlling system: Electrified Controller & InverterRecommended Batteries: 12V200AH, 2 piecesCan load: light, fan and charger, TV, pump (375), washer and small refrigeratorAuthentication: CE and ISO certificate