LM2596 DC Buck Step-Down Power Converter Module DC-DC 4.0~40V to 1.25-37V 3A Adjustable Voltage Regulator With LED Voltmeter

LM2596 DC Buck Step-Down Power Converter Module DC-DC 4.0~40V to 1.25-37V 3A Adjustable Voltage Regulator With LED Voltmeter

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