["12V Battery Low Voltage Cut off Automatic Switch On for Protection Undervoltage Controller\r\n\r\nFeatures:\r\nThis is a under-voltage switch controller used to turn off the power of load in the event of the voltage dropping below a set value.\r\nWhen the battery voltage increases to a set value, the module will automatically turn on load again.\r\nDesigned with a LED indicator to show if battery is under-voltage.\r\nBoth turn-off and turn-on voltage value can be adjusted by simply pressing buttons.\r\nThis controller will help you to protect battery from over-discharging and prolong battery life.\r\n\r\nSpecifications:\r\nSuitable Battery: 12V storage/lithium battery\r\nControl Current: 20A\r\nControl Precision: 0.1V\r\nVoltage Error: ±0.1V\r\nSize: 8*4.3*2.8cm/3.1*1.7*1.1in\r\nWeight: 40g(approx.) \r\n\r\nRestore to Factory Setting:\r\nAt normal state, press and hold S1 and S2 buttons together, till display shows 888, to restore to factory setting.\r\n\r\nPackage Includes:\r\n1 x Battery Under-voltage Controller"]