LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs)

using one to lower voltage from 13.2 to1.5 to replace a battery on the ignitor on a stovetop so i don't have to take the whole stovetop up to change the battery. it appears to be working. if it dies i have a spare. I bought one from another vendor that looked almost identical except this one only has one control button. this one is definitely better quality. the screws on the connectors on the first one were very difficult to turn and one of them didn't work at all. it broke trying to fix it. these have connectors that work perfectly. no instructions? hook it up you get input voltage, push button for output voltage. adjust output by turning brass screw counterclockwise to lower output voltage. (default setting 12.5v. takes a whole lot of turns to get it moving at first) hold button down to turn of the display. push again to turn on.

Awesome product. The display was a great help to me.

I've been using these to control speed of an exhaust fan in fully enclosed 3d printers, a Voron 2.4 and a Sovol SV08. These printer exhausts are ducted outside, to eliminate fumes from hot plastic in the work area. I set fan speed to exhaust fumes from ABS and ASA filament printing, and to avoid more air exchange than necessary. This balances the need for exhaust and the need to avoid excessive cooling of the printer enclosure. The regulator assembly performs well, using 24V input and typically 9V output, with relatively "clean" power, together with the useful display of input and output voltage.

These are very well built and work great. They worked fantastic for my project and were easy to set up. They arrived quickly and were packaged well. I would recommend this item and will be buying more in the near future.

Super high quality for this price. I'd recommend it and would buy it again. It shows you both voltange in and out and you can also turn off the voltmeter if you want to. Just hold down the button.