Supply two types: grid-tie and grid-off type. And A set wind turbine contains : Gnerator+Controller +Inverter(grid-tie or grid-off)+Tower+ Bland+Dogvane+(Anemoscope) Product Description Numbers of blade(P): 3 Materials of blade: FRP complex resin Diameter of wind turbines(m): 4 Out-in(start)wind speed: 3.5 Out-out(outage)wind speed: 20 Rated wind speed(m/s): 10 Rated speed(rotate/minute): 250 Max. wind speed(m/s): 40 Wind energy ratio(%): 0.41 Generator: Permanent magnetic generator Generator rated power(W): 2000 Max.output power(W): 2500 Output voltage(V): 115 Rated current(A): 17.4 Type of off-course: Wind direct-ion is decided by tail Type of limit speed: Stanting limited by automatic Protect: Manual Tower: 3 pipe cone Altitude of tower(m) :8 Charging control: Automatic Weight (kg): 1000 Power generation of years(kwh): 5000 Inverter power supply: Square wave or corrected wave Battery: N200x9 Time of charging(h): 20