UMLIFE Digital LED Temperature Controller Module, XH-W3001 Thermostat Switch with Waterproof Probe, Programmable Heating Cooling Thermostat (12V 10A 120W)

Works well, easy to set up. So far so good!

while researching how to build a fan/temperature sensor I found this unit from Amazon! Discovered it was less expensive than buying the parts to build one , plus it came in a mountable enclosure , with the temperature sensor. All I had to do was connect a 12 volt source, and the fan I wanted to use and placed the temperature sensor on the heat sink of my ham radio and it was ready to keep the radio cool ! Only one draw back and it is not a major one, the readout is in Celsius with no way to change it to Farenheit, not a big deal once you understand the temp range you want to set it for......in Centigrade......and when you get it for the price offered , a complete ready to go unit, this became, for me, a minor detail. unit is in use and working exactly like I wanted! Great buy!

This arrived with no issues. There were no markings on what wires (or colors) were for what....It came with no details, just the thermostat switch. I had to use a Chinese language translator to help identify which set of wires was for which part. Other than that, there were no unexpected surprises. The device ONLY uses CELSIUS numbers for the temps, but it's pretty simple to do a conversion. Although it would be much handier if there was a means to select one or the other to remove some of the guess work out of it. (Perhaps there is something if you operate on it - but that would void any warranty for sure) It's been in service for a few months now --- It's connected to a exhaust fan in a large shed which is powered by solar setup. It starts and stops on its own as expected based on the settings I inserted. Note that there IS a draw on the power source....I register about .2amp when it's sitting idle. Although this is a vampire draw, it shouldn't impact a properly setup solar system. I have it coming on when it senses about 80 deg F, and then it will shut off when it drops below 75 deg F. The Thermostat has a TRIGGER (turn on) setting, and a OFF setting. Make sure your OFF setting is low enough not to make it cycle too soon, or it will act like it's never shutting off, and will likely place a strain on not only the electronics, but also what is connected to it. In my case, the cut-off is more for times when the temp in question is fluctuating because it's not getting hot and staying there, rather than once the sun is out full time like past spring when the sun is there all day. At that point, if the temp drops low enough (night time) the exhaust won't run since it won't be needed.

Very happy with this. Used this for an enclosure for my 3D printer and regulates the temperature perfectly. The temperature registers quickly and can change the max and min values within 0.1°C. Also to keep in mind, the output actually puts out the input voltage (doesn’t just function as a relay).

Once you figure out how to set the on and off temps, it worked perfectly Chinese instructions only. Leads are maybe 2” long and wire is hard to strip so plan accordingly.