The device works perfectly, the numbers are easy to read. The temperature has been checked with a few other digital thermometers and is within a degree or two. However, I bought it primarily to measure humidity in a meat curing room and the humidity reading is way off the mark, around 10%. It wasn't meant to be accurate, so I wasn't overly concerned that it might not calibrate to exact accuracy, but when I tested it on my Inkbird humidistat, it turned out to be off. So I bought a Bodeva Humidipak to test both. The Inkbird was only wrong by 1%, but this ThermoPro TP55 was wrong by a lot. Very disappointed as the humidity accuracy was no where near as advertised. Of course, once I had everything set up, compared the readings, and compared to a calibrated humidifier, the VERY short return window had expired, so I stuck with it.
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