This panel is pre-wired and ready to go! Hook up your battery and absolutely no additional wiring is needed!. Features: Completely assembled and quality checked in USA. Capable of handling up to a 1200W wind turbine. No exposed wiring. Safe and easy to use. Aluminum dump load resistors run cooler and last longer than traditional ceramic resistors while still dissipating 300W each. Temperature switch automatically turns on cooling fan when needed and automatically turns off cooling fan to avoid battery drain. Pre-wired and ready to go: Connect battery and inverter Wind turbine brake with 3 Phase AC input connectors ready to connect wind turbine. Rectifier converts 3 phase AC input to DC battery charging voltage. Perfect for off-grid installations at home, industrial use, commercial use, camping, tailgating, etc. 3 variations available: 400W, 800W, 1200W. Specifications: Battery voltage: 12/24VDC Solenoid rating: 200A max Wind turbine power input: 3 phase "wild" AC