Features: This is a under-voltage switch module 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 load is cut off or turned on. Both turn-off and turn-on voltage value can be adjusted by simply adjusting potentiometer. This protection board will help you to protect battery from over-discharging and prolong battery life. Specifications: Suitable Battery Voltage: 12V Voltage Error: ±0.1V Load Current: 10A Size: Approx. 5 x 3 x 1.7cm/2.0 x 1.2 x 0.7in Weight: 21g(approx.) Package Includes: 1 x Protection Board Note: Please note that this product is an undervoltage protection board and has no charging function. .