LCD liquid crystal display display battery operating status, display solar panel operating status, display mode control, display load output status and all parameters, display normaland error status.7 operating modes light control mode, light control + time delay control mode, general control mode, manual control mode, time control mode and test mode.The test mode is for factory test use only.4 types of voltage, automatic identification 4 kinds of voltages, automatic identification: DC12V/24V, DC36V, DC48V are automatically identified. Large cross-section wiring connection Wiring connection withLarge cross section: Use large cross section and large spacing wiring connectors, 16mm wires can be installed.Dual USB charging ports The solar charge controller has a dual USBCharging port design, which can charge two devices at the same time, supporting most USB port devices such as mobile phones, tablets, PSP game consoles, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.