【USED FOR】This controller is suitable for 6-60V battery charging control, and can set up the modes of charging voltage and stop charging voltage 【WITH DIGITAL DISPLAY】This battery board is equipped with digital display for easy reading, conveninet to monitor the charging status 【EASY TO USE】Input charger 6-60v in the IN end, connect storage battery in OUT end. For example, setting the 12V start, and 15V stop, when the voltage is less than 12V. The relay closes and send the charging voltage of the charger to the battery, when the voltage is higher than 15V, the relay disconnect and stop charging discharges. 【WIDE APPLICATION】Battery charging control module is suitable for use in home charger, solar energy, wind generator and more. 【LOW POWER CONSUMPTION】Automatic power outage, avioding the battery from over discharging to prolong the battery life time and save energy