Better power in low wind speeds than H40. You supply pipe and ground anchors. The Air 403 is a small and lightweight turbine of clean design with less than 4 foot rotor diameter. Power output is low compared with larger diameter windmills, only about 60 watts at 15 miles per hour, and around 250 watts at 23 mph. The amount of wind intercepted is very small and contains much less energy.
Good performance requires installation in a high wind speed area.
This unit may be noisy. Warranty 3 years. Unique 3 blade rotor uses carbon matrix blades which flex to change pitch in the wind. Body is aluminum casting. Internal voltage regulator allows direct connection to battery.