Works as advertised to adjust voltage, but I wish the USB connector was a fixed voltage rather than being tied to the same voltage of the screw terminals. Who wants 24VDC on a USB cable???. There were no assembly instructions or usage instructions other than what was included in the listing. It took a bit to figure out how it was supposed to go together based on the images in the listing.

Performance has been fine after a month, so I believe this is made to last.

This is a great little device that does exactly what you expected. I have it delivering 5V to a beaglebone black cape and so far has not been a problem.

This buck volt regulator added a nice touch to my back-yard lighting project. It allows me to tweak a 12V camera power distribution box down to 3.5-6v depending on how much I want to strain my light strands. I"ve been using it nightly for several weeks now.

The case assembly was easy enough and amusing. The voltages are pretty dang close when I use my multimeter so I didn"t bother with calibrating it. It does everything I need!

The board with the case came with case, screws, and a heat-sink.

I used slightly longer screws to attach these through M3 threaded holes in a metal power supply distribution box sold for CCTV applications.

Works excellent - been running for months now. Amazing value.

Did not come assembled (listing needs to mention that) and I had to drill some of the holes larger because they weren't placed quite right and were bending the buttons. Otherwise it works well enough.