In the voltage indication it has a small deviation, but nothing worrisome.
It works as it should.

Came in a few pieces/parts. The two acrylic sheets for top and bottom still had the protective paper on both sides and needed to be peeled off. I had to use my very sharp pocket knife to get it started. Then you just put the tree blue button covers on the actual buttons and install the plastic cover pieces with included risers and screws. I didn't look at the instructions at all and had it easily assembled in less than 5 mins. When there was no load hooked up and I converted the input side to my 2.4amp 24vdc power supply, it was maintaining perfect regulation of 5 volts. I have it connected to a ws2812 (256 led) array/matrix on the output side and they are super bright. Yet, i looked back on a video i was shooting and noticed it was outputting 2.6vdc at .33amp, which i can and did play with the amperage a little via the CC (current controlling) adjusting terminal and they got brighter and brighter as i turned it up. The highest I went was .88 amp. I'm going to play with it some more to see if it's actually going to keep my voltage setpoint steady and update my review afterwards. Either way, it driving these LEDs perfectly and was a great price.

ok

The item comes disassembled in bags, and no instructions. The board and covers with vent slots that can be flipped. They all have screw holes with identical layouts, and the spacers allow for multiple configurations of assembly. Fortunately, it is fairly obvious how it most likely goes together if you stack the parts before assembling it.

Works great im using it to charge batteries