30amps Solarmax Solar Charge Controller

This solar charge controller can automatically control the operation of the solar panel and battery in the solar system. It is easy to set up and operate. To protect the life of your battery, when the voltage of the battery drops below 8V, the solar controller automatically turns off (LCD is not available at the same time). It is a very smart unit for solar panel! How could I use it? This charge controller is for 12V / 24V