Feature:1. These accessories are made of alloy steel and plastic materials, high temperature resistance, and can be used in any environment.2. Effective current and voltage regulation, high wind energy utilization rate, can ensure good power generation rate.3. 4blade and lanternshaped appearance design can effectively reduce wind resistance and reduce wind turbine energy consumption.4. The external rotor AC motor, the good matching characteristics of the wind wheel and the generator make the entire unit run more reliable.5. Widely used for charging boats, terraces, cabins or mobile homes, or solar and wind power hybrid systems.Specification:Item Type: Wind TurbineMaterial: Alloy steel + plasticRated Wind Speed: 12m/sStarting Wind Speed: 2m/sSafe Wind Speed: 45m/sWind Wheel Diameter: Approx. 0.9m / 3ftNumber of Blades: 4pcs.Package List:1 x Fastening Tool Kit4 x Blades1 x Wind Turbine1 x User Manual1 x Fixed Sheet1 x Wrench1 x ControllerNote:1. When assembling, please place the generator, do not drop, knock, or touch, otherwise it will damage the product and affect the use.2. When connecting the controller, be sure to follow the wiring diagram on the controller to wire, otherwise it will affect the normal use of the product, and the product will be burnt in severe cases.3. After assembling, first confirm whether each screw is fixed well before using.