ENHANA 5 Pack LM2596 DC-DC Step Down Buck Power Convert Module, Adjustable Voltage Regulator, 4.0-40V Input to 1.25-37V Output Buck Converter with LED Voltmeter Display

["【Integrated Thermal Protection】 Built-in thermal shutdown and current limit protection safeguard your devices from overheating and overload, extending the lifespan of your components.","【LED Numeric Display】 The buck converter has an LED voltmeter that’s pretty accurate, with only ±0.1V error. It works with input voltages from 4.0V to 40V and outputs between 1.25V and 37V. Just so you know, if the input voltage goes below 4V, the voltmeter won’t work and the display will go off. To turn it off, just hold the switch for 1 to 4 seconds and let go. Once it’s off, you can turn it back on by tapping the switch quickly","【Features】Built with SANYO solid capacitors, 36μ thick PCB, high-Q inductors, and an LED output indicator for enhanced performance and reliability.","【Ease of Use】 With the LM2596 buck converter, adjusting the output voltage is super easy—just use a mini screwdriver. Plus, it comes with terminal blocks, so you don’t need to solder anything unless you want to","【High-Efficiency Output】Achieve up to 92% conversion efficiency with this step-down regulator, ensuring stable and efficient voltage regulation for your devices, from 1.25V to 35V."]