12V LM358 Accumulator Sound Light Alarm Board Buzzer Prevent Discharge Controller Module Without Overvoltage Protection
Features:
with sound and light alarm, have protection straightforward;
module input belt joint protection, input power supply polarity reverse won't burn out.
But there were no overvoltage protection, if more than 15 v input, will burn out the chip module
Size:2.9 *3.0CM
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