5Pcs/1pc 300mA DC-DC Step Down Buck Power Module Dual 15V 12V 5V to 7-50V output ±15V ±12V ±5V Converter Voltage Regulator Board

5Pcs/1pc 300mA DC-DC Step Down Buck Power Module Dual 15V 12V 5V to 7-50V output ±15V ±12V ±5V Converter Voltage Regulator Board

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