Solar Charge Controller Solar Panel Regulator 12V or 24V Regulator With USB 10A Solar Charge Controller Solar Panel Regulator 12V or 24V With USB 10A 10A 20A 30A PWM Solar Panel Charge Controller 12V or 24V Auto Big LCD Solar Regulator with 5V Output Dual USB for Home PV System 1. Built-in industrial microcontroller. 2. Large LCD display, all parameters adjustable. 3. Full 4-level PWM charging management. 4. Short circuit protection, open circuit protection, reverse polarity protection, overload protection. 5. Dual MOSFET reverse current protection, low heat generation. MENU: Switch between different displays or enter or exit the setting by long pressing. UP: Press this button to increase the value. DOWN: Press to decrease the value. 1. Press the [Down] key to manually turn on or off the main screen. 2. The working mode works as follows: [24H] Charges the output 24 hours. [1-23H] Charges after sunset and closes after setting hours. [0H] Dusk to dawn. If there is any problem with the product, please contact us via the website message, we will provide you with a satisfactory solution within 24 hours. 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.