DC Buck Converter, Yeeco 4-38V 24V 32V to 1.25-36V 3V 5V 12V DC-DC Step Down Voltage Regulator Converter 75W 5A Adjustable Volt Transformer Board Power Supply Module with LED Display Voltage buck converter input 4-38V, suggest voltage higher than 4.5V; 5A Voltage converter output 1.25-36V, large adjustable range for various electronics; Power supply reducer module with short circus protection and thermal protection, protect your electronics and ensure you to use in safety Clear display volt stabilizer regulation, voltage greatly shown on LED display board, allows you to read data fast; High accuracy step down voltage regulator, 3 numerical digit voltage display helps you to read data much more accurately Adjustable step down converter with buttons, you can make the display on and off on the left button, and right button to change input and output voltage display and save setting High efficiency voltage reducer board, 96% conversion efficiency and low heat generated, this step down power supply module works with high efficiency and ease you from heavy duty electrical work DC-DC converter ideal to charge storage battery, power supply voltage regulator, DIY adjustable voltage stabilizer power supply, car laptop charger; Step down buck converter board comes with 4 chopper pillars