Features: Large LCD display with battery and solar panel working status, mode control, load output status, and parameter display 7 operation modes: charging mode, light control mode, light control + time delay control mode, general control mode, manual control mode, timing control mode, and test mode (factory use only) Automatic identification of 4 kinds of voltages: DC12V/24V, DC36V, DC48V Automatic focusing MPPT tracking charging for high efficiency Time and parameter setting function Non-restrictive charging control function Discharge control function varies with different control modes (refer to below) Low-voltage protection with a manual discharge stop function