Yeeco DC Buck Converter, 120W 8A DC to DC Step Down Converter 5.3-32V 24V to 1.2-32V 12V Voltage Regulator Adjustable Volt Transformer Board Power Supply Module with LED Display and Protective Shell Voltage buck converter input 5.3-32V, not recommend voltage below 5.3V; 120W 8A Voltage converter output 1.2-32V, large adjustable range for various electronics; Power supply reducer module with short circus protection and power reverse protection Clear display volt stabilizer regulation, voltage and amperage greatly shown on LED display board; Bright light display step down power supply module, convenient to read both input and output voltage and amperage at the same time Adjustable step down converter with buttons, one button to turn on and off module, one button to change input and output display; DC step down voltage regulator with CC and CV potentiometer, you can adjust voltage and amperage for your favourite with screwdriver High accuracy step down voltage regulator, 4 numerical digit to show voltage, 3 numerical digit to show amperage and power, display much more accurately; High efficiency voltage reducer board, 96% conversion efficiency and low heat generated DC-DC converter easy to install, comes with setting blocks, screws, buttons and acrylic outer shell; Protective shell wonderful to storage and protect step down buck converter board; Nice to use a common buck converter, battery charge regulator, constant current driver and more