Key benefits Efficient voltage conversion: 5A DCDC buck converter module that takes input from 4.0V to 38V and provides a variable output from 1.25V to 36V, suitable for a wide range of power control applications. Accurate voltmeter: Onboard voltmeter is selfcalibrating, delivering measurements with an error of only ±0.05V and a measuring range of 0 to 40V. Convenient connections: Input and output terminals use screw connectors for easy, solder wiring. Solder pads are also provided for those who prefer soldering. Builtin safety: Overheating and shortcircuit protections help safeguard your devices and projects. Meter accuracy note: For voltage meter accuracy, ensure the input voltage is above 4.5V. Specifications Type: 5A DCDC buck converter module Input voltage: 4.0V to 38V Output voltage: 1.25V to 36V (adjustable) Output current: up to 5A Onboard voltmeter: selfcalibrated; accuracy ±0.05V; measuring range 0–40V Connectors: screw input and output terminals; solder pads available for soldering Protection: overheating protection and shortcircuit protection Note: To ensure voltage meter accuracy, please keep the input voltage above 4.5V Applications Powering microcontroller or embedded projects from a variable battery supply (4–38V) by setting a stable output in the 1.25–36V range. Providing a precise supply for sensors, modules, or LED strips in a lab bench or hobbyist setup. use in automotive or robotics projects to derive a stable voltage from a vehicle battery or power pack, while monitoring the supply with the builtin voltmeter.