Features: This product is suitable for 6-60V battery charging control, and can set up the modes of charging voltage and stop charging voltage. Suitable for use in home charger, solar energy, Wind generator. 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. Is quite intelligent, helping save electricity, and safe. Automatic power outage, save energy saving energy, prolong battery life. Specifications:Input Voltage: DC 6-60V Display Precision:0.1V Control Precision:0.1V Output Type: direct output Voltage error:+/-0.1V Application Fields: 6-60V storage battery Size:81*54*24mm/3.19*2.13*0.94inch Using Method: In the setting of the voltage value, the start button plays role of Up-adjustaction, stop button plays the role of Down -adjust action 1.Set Starting Voltage: in normal display voltage state, pressthe button will display start charging voltage; long press for 3s the digitaltube will flash; you can start or stop button to set starting up charge voltagevalue 2.Set Stop Voltage: in normal display voltage state, pressthe button will display stopping charge voltage; long press the button for 3sthe digital tube will flash; you can start or stop button to set stoppingcharge voltage value. 3.Factory Reset: in power on state press the start/stopbutton at the same time, digital tube will display 888; that represents factoryreset settings. Package Included: 1 x Battery Charge Control Module