SODIAL(R) 10A 12V/24V Solar Charge Controller Solar Panel Battery Regulator Safe Protection Automatically manage the working of solar panel and battery in solar system. Overloading & short-circuit protection.Easy to set up and operate. Reverse diacharging & reverse-polarity protection. Under-voltage and over-charging protection.Suitable for small solar energy system. Protection from lightning strike.Prolong the battery life cycle and keep the load work well.