Undervoltage Protection Controller, 12V Automatic Switch On Storage Battery Module Battery Low Voltage Cut Off : Industrial & Scientific. Undervoltage Protection Controller, 12V Automatic Switch On Storage Battery Module Battery Low Voltage Cut Off : Industrial & Scientific. This 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 。 When the battery voltage increases to a set value, the module will automatically turn on load again 。 Designed with a LED indicator to show if battery is under-voltage 。 Both turn-off and turn-on voltage value can be adjusted by simply pressing buttons 。 This controller will help you to protect battery from over-discharging and prolong battery life 。 Features: 。 This 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. When the battery voltage increases to a set value, the module will automatically turn on load again. Designed with a LED indicator to show if battery is under-voltage. Both turn-off and turn-on voltage value can be adjusted by simply pressing buttons. This controller will help you to protect battery from over-discharging and prolong battery life.。 。 。 Specifications: 。 Suitable Battery: 12V storage/lithium battery。 Control Current: 20A。 Control Precision: 0.1V。 Voltage Error: ±0.1V。 Size: 8*4.3*2.8cm/3.1*1.7*1.1in 。 Weight: 41g(approx.) 。 。 。 。 。 Restore to Factory Setting: 。 At normal state, press and hold buttons together, till display shows 888, to restore to factory setting.。 。 。 Package Includes: 。 1 x Battery Under-voltage Controller 。 。 。 。