1100% brand new and high quality. 2This controller controls the wind turbine to automatically charge the battery. 3When the battery is full, the fan is braked by the internal circuit automatic control. When the battery voltage drops to the recovery voltage, the fan resumes charging the battery, thus protecting the fan and the battery. 4The rectifier and brake circuit part of the controller adopts integrated module design. 5Fully waterproof protection, fully waterproof and fully waterproof, with protection level above IP67Features: 1.100% brand new and high quality 1. This controller controls the wind turbine to automatically charge the battery. 2. When the battery is full, the fan is braked by the internal circuit automatic control. When the battery voltage drops to the recovery voltage, the fan resumes charging the battery, thus protecting the fan and the battery. 3. The rectifier and brake circuit part of the controller adopts integrated module design. 4. Fully waterproof protection, fully waterproof and fully waterproof, with protection level above IP67. Specification: Condition: 100% Brand New Model:FW12/24 Battery Rated Voltage: 12/24V Wind Turbine Rated Power: 300W/600W Brake Start Voltage (Factory Value): 14.4V/28.8V Brake Recovery Voltage (Factory Value): 13.2V/26.4V Display Mode: Led (Light-Emitting Diode Display) Working Temperature And Humidity Range: -35-+75 Quiescent Current: 15 mA Protection Level: IP67 Weight: Approx. 255g / 9.0oz Size: Approx. 100 * 87 * 28mm / 3.9 * 3.4 * 1.1in Wiring: 1. Connect the positive and negative terminals of the battery to the positive (red) and negative (black) terminals of the battery. 2. Connect the three-phase output voltage of the wind turbine to the three-phase input (green line) terminal of the controller fan. Package List: 1 * Wind Turbine Controller Note: 1. Verify that the wind turbine output voltage matches the rated voltage of the battery. 2. Wiring sequence: first connect the positive and negative poles of the battery, th