Wind turbine generator, mainly 400W Dragonfly, 1000W Butterfly and small vertical wind turbine . Dragonfly wind turbine have 4 different version.1. Off grid 400W Dragonfly wind turbine, MPPT charge controller internal .it is suitable for battery charging2. Grid tie 550W Dragonfly wind turbine, There is voltage regulator for grid tie inverter3. Off grid 200W Breeze Dragonfly with MPPT controller internal, It is a Breeze model .4. Grid tie 350W Breeze Dragonfly w...