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This board can alert you by sound when the battery is low / setting low voltage from 9V to 12V

Technical information:
   - No Supply Needed to the circuit. Direct connect to Car battery
   - One POT to adjust alarm voltage 9-12VDC
   - Normally, alarm voltage will be set at 10VDC
   - PCB size : 1.87" x 1.43"

Example: You set alarm voltage at 10V, when you connect the board to you car battery, buzzer on board will sound to alert you that your battery is too low  ( voltage is below 10V ). Something may happen to your battery, or charging system. It is good for you to pre-check what happen.

Download User Manual