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DC 5.5-30V to 0.5-30V Buck Boost Converter Module Adjustable Step Down Buck Boost Board with LCD Display Power Module (HW-140)
https://www.youtube.com/watch?v=OgqNmDe7u4k Description: Buck - Boost Module (Constant Voltage Constant Current LCD Version) 1. Product Highlights: 1.1 LCD input and output voltage, output current output power; 1.2. Input anti-reverse protection, reverse...