Operating Principle: The controller can control the wind turbine to automatically charge the battery. When the battery is fully charged, the fan will be braked automatically by the internal circuit. When the battery voltage drops to the recovery voltage, the fan will resume charging the battery. Protective Function: When charging, the controller has the function of limiting voltage and current to ensure the best charging effect. At the same time, it provides maximum protection for wind turbines and batteries. Modular Design: The rectification and braking circuit parts of the controller are designed with an integrated module, which is further than the traditional design in terms of heat dissipation and reliability. Waterproof Performance: This controller adopts more than IP67 fully sealed and completely waterproof design, which can be used normally for a long time even in water. Aluminum Alloy: The controller is made of aluminum alloy material, corrosion resistance and wear resistance, comes with a long life span.<br><br>Item Type: Wind Generator Controller Rated Battery Voltage: 12 or 24V Rated Wind Turbine Capacity: 400W Wind Turbine Braking Voltage: 14.5V or 29V Wind Turbine Recovery Voltage: 13.5V or 27V IP Protection Level: IP67 Note: Pay attention to the safety of electricity use, and the wiring must be accurate. color:As shown Material:Aluminum Alloy<br><br>Package Contents: 1 x Controller<br><br>Only the above package content, other products are not included. Note: Light reflection 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.