Features 1、This is a under-voltage switch module used to automatically turn off the power of load in the event of the voltage dropping below a set value 2、Then it will connect to charger automatically to charge storage battery 3、When the battery voltage increases to a set value, the module will automatically turn on load again and stop charging battery 4、Designed with a LED indicator to show if load is turned off or turned on 5、Both turn-off and turn-on voltage value can be adjusted by simply adjusting potentiometer Specification Features: Then it will connect to charger automatically to charge storage battery. Designed with a LED indicator to show if load is turned off or turned on. This control board will help you to save power and prolong battery life. Specifications: Voltage Error: ±0.1V Load Current: 10A Size: 6*3*1.8cm/2.4*1.2*0.7in Weight: 24g(approx.) Package Includes: 1 x Control Board Package List