DC-DC Buck Step Down Converter Regulator Module 80V-60V DC DC Buck Voltage Converter, 10-75V to 0-60V Adjustable Output Numerical Control Step Down Voltage Regulator DC-DC Buck Converter Digital Voltage Regulator 10-75V to 0-60V 12A 720W Step Down Transformer with Volt AMP Capacity Time Meter 7-60V to 5V 5A 4 Port USB Charger DC Step Down Voltage Regulator Power Supply Module with Case Show More