30A NEW VERSION Gaomoo Charge Controller Solar Controller Regulator Intelligent USB Port with Display 12V-24V In a word Powerful function/Strong protection/high-quality material/well-built solar charger controller. 12/24V Automatic self-adaptionBig lcd display2 usb output 5v Current-Adaptive under 3A PWM charge management High qulity materialsafty considerationeasy to install,easy to use. Short-circuit protectionOverload protectionOvercharge protection/Over discharge protectionVoltage low protectionAnti reverse charge protection/Anti reverse connection protection