1. High quality technical components guarantee its stability and reliability2. Voltage/current control charging make sure storage batteries are always at the best state of charge.3. MPPT charging effectively collect power from generator to charge storage batteries.4. Aluminium alloy shell makes it light and good heat dissipation. Anti-water,anti-dust shell make it applicable in various outdoor environment.5. Full protections: overcharge, overdischarge, reverse connection of batteries, overloading, lighting, current control, automatic braking of wind generator.1. Safety InstructionsPLEASE READ THESE INSTRUCTIONS CAREFULLY PRIOR TO INSTALLATION OR OPERATION OF THIS PRODUCT.1.1 Please make sure the output voltage of wind generator is consistent with rated battery voltage.1.2 Please connect the cables of plus-n-minus of battery firstly and then connect the three cables of wind generator.1.3 Please make sure you connect battery and wind generator with controller according to this instruction, opposite polarity or wrong position connection will result in abnormal operation of system or damage of system components.2. Wiring2.1 Connect the "+" and "-"of battery with red and black input wires of controller.2.2 Connect the three cables of wind generator with three blue wires of controller.3. Lights3.1When wind generator light (green) is on, it indicates wind generator connection is normal and it shows the rotation speed of wind generator by twinkle speed.3.2 When brake light (red) is on, it indicates controller is braking automatically due to battery full charged or over-current protection function operation of controller.Type: 400Wsize: 80 x 80 x 15mmMaterial:Aluminum alloycolour: black+orangePackage Contents:1 x Wind Turbine ControllerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.