As a starting point let's consider the LM2596 DC-DC Voltage Regulator Adjustable Step Down Power Supply Module with Display.
This product offers a range of features that make it an attractive choice for those in need of an adjustable voltage regulator with a display.

Notably this product comes equipped with a voltmeter that shows voltage meter error of ± 0.1V, with a range of 0-40V. In addition, the regulator can switch between measuring input and output voltage, and has a light show to indicate which is being measured. It also has a power off memory function retaining the last measured voltage value after power off. The touch button feature allows for easy LED display on and off. Additionally, the band terminals make it easy to use even without iron, and retention wire connection points add to its convenience.

However there are some potential drawbacks to consider. While some users have reported issues with shipping times, others have commented on the need for an aluminum plate for cooling down the MOSFET. Despite these minor drawbacks, the LM2596 DC-DC Voltage Regulator Adjustable Step Down Power Supply Module with Display offers a range of features that make it an attractive choice for those in need of an adjustable voltage regulator with a display.

All things considered this is a must-have for anyone looking for a reliable and versatile voltage regulator. The product offers a range of features that make it easy to use and highly functional. Overall, we highly recommend the LM2596 DC-DC Voltage Regulator Adjustable Step Down Power Supply Module with Display for anyone in need of an adjustable voltage regulator with a display.