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This DC-DC step-down buck converter module comes in a 2-piece set, supporting wide 6-32V input and steady conversion to 5V output. Built with dual USB ports and fully compatible with QC3.0 and QC2.0 fast charging protocols, it can charge two devices at the same time stably. Adopting high-efficiency step-down chip solution, it features stable performance, low temperature rise and strong over-current, over-voltage protection. Equipped with a DC power cable for convenient power access and wiring. Perfect for 12V/24V vehicle modification, solar power distribution, industrial equipment power supply and electronic DIY fast charging applications.