1PC DC-DC Buck-Boost Module 2.5V-15V to 3.3V 5V Auto

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2pc XL6009 Boost Buck Module DC-DC adjustable Voltage Converter Power Supply USA

DC-DC 2.5V-15V To 3.3V/4.2V/5V/9V/12V Automatic Buck-Boost Step Up Down Module

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Mini AC-DC 110V 120V 220V 230V to 5V 700mA converter board module