General description This USB 12V to 5V DC Buck Converter Module is designed to convert unstable DC voltages ranging from 10V to 55V into a stable 5V output. It features dual USB female ports, allowing for simultaneous charging of two devices. With a high conversion efficiency of over 90%, this compact and reliable module is suitable for various applications including vehicles, solar power systems, and electronic displays. Technical specifications Input Voltage: DC 10-55V Output Voltage: DC 5V Output Current: Max 3A Conversion Efficiency: 90% or more Installation Connect the red wire to the positive terminal and the black wire to the negative terminal. Usage Ideal for charging devices in vehicles, monitoring systems, and various electronic applications. Other information Protection features: overcurrent, overtemperature, and short circuit protection. Durability: potting with epoxy resin makes it shockproof, waterproof, moisture-proof, and dustproof. Compact design: ultra-thin and small