Features:Thisis 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.Then it will connect to charger automatically to charge storage battery.When the battery voltage increases to a set value, the module will automatically turn on load again and stop charging battery.Designed with a LED indicator to show if load is turned off or turned on.Both turn-off and turn-on voltage value can be adjusted by simply adjusting potentiometerThis control board will help you to save power and prolong battery life.Specifications:Suitable Battery Voltage: 12VVoltage Error: 0.1VLoad Current: 10ASize: 6*3*1.8cm/2.4*1.2*0.7inWeight: 24g(approx.)Package Includes:1 x Control Board