It didn't work for what I bought it for, to measure my freezer. It stops measuring at around -10C and shows "LLL". Even inside a sealed bag. I kept it as a room thermometer.

Only for refrigerator use. In freezing, after -15 it simply displays LLL. The measurements of the refrigerator seem to have ~1 deviation.

Excellent tool. It responds immediately to changes in temperature and humidity. Essential for regular monitoring of refrigerator performance. Useful as a room thermometer for the rest of the time.

Small deviations and for the money it costs, I think it's fine! If it had lighting, it would be perfect.
Very small in size, the photos on the internet are deceiving. Despite that, it is convenient after all, it can be placed with the built-in stand it has, or on the wall with a nail or magnetically with its built-in magnet. As for the temperature, it has a deviation of about 0.9°C for accuracy, as well as a deviation of 5 to 6% in humidity.

Update 28/03/2023
Actually, the deviation in humidity is 8-10% but okay, we can't expect much for 10€.

Update 29/03
Actually, it has an issue with humidity, sometimes it has a deviation of 5%, other times 7%, and sometimes even 10%, it's all over the place

It's fine, it has a small deviation of about 1-1.5 degrees Celsius with the burner's thermometer and 5% difference with the dehumidifier. For its price, it is good

The most reliable in temperature and humidity measurements available in the market for this price. It is comparable to much more expensive measuring instruments.

Various measurements I made proved it reliable. It's worth it. The tests were done in refrigerators and freezers, only for the thermometer. I don't know about the integrated hygrometer it has. Now I have it and it measures room temperatures for me.

It is a good thermometer, but all opinions about the refrigerator are completely wrong! Only the refrigerator recorder can show how the refrigerator works, nothing else!! Your refrigerator recorder shows how the refrigerator works for up to 3-4 days and that way you have a clear picture! With the thermometer, you can make many mistakes, which I cannot write here because it would be a long report!!

It's a pretty good product, I haven't tested if it has accurate temperature and humidity, but for my baby and to have a general idea, it's great for a mom to know the temperature and humidity of the room and the whole house. I am quite satisfied. The size is quite small and I didn't expect that, but the second small negative is that it doesn't have brightness for the night. It doesn't matter though, it's still worth it.

I bought it to monitor room temperature and humidity, not for the refrigerator, and it is the only one that shows accurate measurements.... I have thrown away several thermometers and other meteorological nonsense because they showed random readings, this one shows the same temperature as the mercury but also the same humidity as the dehumidifier... So it is worth buying it and more

I bought it for my refrigerator to compare the temperature in storage and freezing because another thermometer I had had a deviation of 4 degrees in storage and 6 in freezing. Fortunately, it showed me the temperatures I have set in the refrigerator and I avoided the technician's visit.
It is very small in dimensions 4.5x1.7x5.8 cm, it has a CR2032 battery and three (3) mounting options... wall-mounted, magnetic, and with a stand.
2-year warranty, country of manufacture China.

Very good in everything... excellent for me!!!

The first one that arrived unfortunately didn't open and they sent me a replacement immediately.
From what I can see, its measurements are reliable. When I have the refrigerator at 6 degrees, it also shows 6. And with humidity, I think it does quite well. Now I use it outside the refrigerator where it works just as well.
One of its positives is the large and easy-to-read screen from a distance

You put it in the freezer or refrigerator and.... you forget about it! But when you need it, it's always there to tell you the temperature and humidity.

Reliable, small size, relative accuracy in measurements. Personally, I use it in the refrigerator and I am satisfied.