I'm confident it's an UP Aqua product, I was able to find it on their web site. So it is a Chinese product, likely with broken English instructions. A big question for me is if it actually works well, though. I mean, a gadget like this shouldn't be too hard to figure out, so long as it's accurate and works properly, $60 for a pH controller is pretty good.
Agree with this thinking as figuring the instructions is kind of funny in an odd way if we know what it is they are trying to get across. And for help on that point, I found another site which did much better at the ad as they did go into how to do the calibration, which is really about all we need to get on how to use it. I had somewhat advantage on understanding the directions due to using the Milwaukee which is very much the same, except for physical difference.
Perhaps a brief rundown on what the instructions SHOULD say?
Calibrate it before using! To do that, connect the probe and put it in the 4.0 sample and turn the adjustment until the meter reads 4.0. Swap the probe to the 7.0 sample, give it time to settle, then adjust the second knob to read 7.0. There are two adjustments to make on this and the Milwaukee and after that, we plug the CO2 solenoid into the right hole and go, with the added info that it pays to get to know how it runs by occasionally checking the calibration and adjusting as needed to bring it back to reading the 7.0 fluid correctly.
I'm sure there will be other instructions like how to wash it and such but the main points can be covered in one paragraph, if we try! I would guess that the performance will be pretty close to the others on the market, with the main difference being that it is a later electronics design, which in turn does often make the newer somewhat better. Look at the difference in cellphones where we have moved from phones we carried in a bag to what we have and know that the Milwaukee is now a pretty old design. Nothing wrong with either but one is newer?
The first mobile phone I used had to be screwed down in the back of the truck as it was too big to fit anywhere in the cab!