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This DC-DC step-down buck converter module features wide 6-32V input and stable 5V 3A output, perfectly supporting 9V, 12V, 24V power conversion. It is fully compatible with QC3.0 and QC2.0 fast charging protocols to deliver efficient quick charging. Matched with 24AWG high-quality USB cable for solid conductivity and long service life. Multiple safety protection designs prevent overload and short circuit risks. The package includes 5 units, ideal for car power refitting, electronic DIY, industrial power supply conversion and daily charging transformation projects.