***NO ON-LINE PURCHASE. ONLY AVAILABLE IN SHIP SHOP. Specs Marine-Grade 400 Watt Wind Turbine Name Value Amperage 400 Watts at 28 MPH Dimensions 46\” Blade Span Material Diecast Aluminum Warranty Details Two Years Product Overview Low startup speed, maximum output of 400 Watts in a 28mph wind, with marinized protection. These wind turbines efficiently harness wind energy 24 hours per day, seven days a week. AC output at the wind turbine body ensures that you keep the most power possible over the distance from generator to batteries. High-quality marine-grade coating and construction provide versatility on both land and marine environments. Maintenance-free design features an industrial strength die-cast aluminum body with carbon fiber composite blades that are engineered for low-noise operation. Maximum power is reached at 28 mph wind speed. Maximum Power Point Tracking (MPPT) Smart Controller (included) varies voltage to current ratio for the most efficient charging. Automatic regenerative electromagnetic braking system keeps the unit operating within the proper mechanical and electrical limits without manual intervention. Overspeed/Overcrank shutdown prevents damage in high wind conditions. Key Features Low startup speed of 7mph Carbon fiber blades ensure low noise, little disturbance and maximum performance High-quality powder-coating for marine protection and durability Industrial-strength aluminum body rated for wind speeds up to 110mph Includes external MPPT Controller with LCD output power display Requires 1 1/2\” Schedule 40 pipe (actual OD 1.875\” – 48mm), sold separately Maximum output: 400 Watts at 28mph wind speed Minimum wind speed: 7mph Survival wind speed: 110mph Output voltage: 12V Blade span: 46\” Number of blades: Three Blade material: Carbon fiber Body material: Diecast aluminum Weight: 12.3lb. Overspeed protection: Regenerative electromagnetic brake system Warranty: Two years What\’s in the Box Screws (6) Nut-Jam-SAE 5/8-18 Blades (3) Hub Nylocks 6-32 (3) Socket Head screws (3) Face Assembly Stator Rotor O-Ring Body Assembly Snap Ring Yaw Shaft Assembly Controller