Features Mppt Technology: 100a Mppt Solar Controller, Using Advanced Mppt Maximum Power Point Tracking Technology Algorithm, 12v, 24v, 36v, 48v Automatic Identification; Dual Usb 5v Charging Ports Can Quickly Track The Maximum Power Point of Pv System Multifunctional Design: A Multifunctional Lcd with Backlight Display And Clock Display, with 7 Working Modes, Charging Mode, Light Control Mode, Light, Delay Control Mode, Universal Control Mode, Manual Control Mode, And Timing Control Mode. Safety Voltage Protection: Mppt Solar Controller with Voltage Protection, Including Battery Overvoltage And Overcurrent Protection, Power Failure Protection, Overcharging Protection, Deep Discharge Protection, Reverse Connection Protection, And Overheat User Friendly Design: Lcd Displays Are Designed to Dynamically Display The Operating Data And Working Status of Devices. Controller Parameter Display (Working Mode, Battery Voltage, Photovoltaic Charging Current, Battery Discharge Current, Product Operat Multiple Battery Charging Options: Compatible With for Gel, for Flooded, And for Lifepo4 Battery Charging. Specification: Item Type: Solar Charge Controller Material: ABS Voltage: 12V, 24V, 36V, 48V adaptive Rated Current: 100A Maximum PV Voltage: 100V Maximum Solar Input (Voc): 15-25V (12V battery); 30-50V (24V battery); 45-75V (36V battery); 60-100V (48V battery) Maximum Photovoltaic Input Power: 1200W (12V battery); 2400W (24V battery); 3600W (36V battery); 4800W (48V battery) Package List: 1 x Controller Package List 1 x Controller