400W wind turbine generator built in Mppt controller 12/24V auto distinguish

400W wind turbine generator built in Mppt controller 12/24V auto distinguish.

Parameter:
build in MPPT charge controller.
Rotor Diameter: 46.1 in(1.17m)
Weight: 7.5KG
Shipping Dimensions: 24*15.7*7.5 in(600*400*20mm)
Mount: 1.5 in schedule 40 pipe 1.9 in (48.26mm)OD
Start-up wind speed: 2.8m/s
Output voltage: 12V/24V auto. distinguish
Rated power: 400W at 29mph(13m/s)
Max power: 550w
Turbine Controller: MPPT(Maximum Power Point Tracking) controller.
Body: cast aluminum.
Blades: 3-Carbon fiber composite
Overspeed Protection: Electronic torque control.
Kilowatt Hours per Month: 40Kwh/mo at 12mph(5.5m/s)
Survival wind Speed: 112mph(50m/s)
Max Noise level (decibel): 60db
Warranty: 3 year limited warranty.

Details:
1.Blade,
It is a real Carbon fiber material ,By Injection mould. Not a normal plastic .
They are very hard but light ,Easy to start up .it is a ral top-grade blade.the blade warranty for this blade is 6 years.

2.body,
A whole Die casting aluminum ,Not screw by some nut like ou