10Pcs XL6009 DC-DC Buck Converter Buck Boost Voltage Power Supply Switch Module 4A 400KHz Adjustable 3.8-30V to 1.25-35V

10Pcs XL6009 DC-DC Buck Converter Buck Boost Voltage Power Supply Switch Module 4A 400KHz Adjustable 3.8-30V to 1.25-35V

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