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I purchased this hygrometer and a Boveda calibration kit. I calibrated the hygrometer and it was reading 42% RH. I used the knob to adjust the reading to 75% however it won’t go that high so I still have to do mental math. I spoke with support and was told to remove the battery, turn the knob to the left and reinsert the battery, recalibrate and try again. I got the same results after trying this fix. The hygrometer still functions, my problem is I bought this type so I wouldn’t have to do the mental math -trying to remember this hygrometer is off 13% and my analog is off 10%. Not sure if maybe there’s just a defect with mine or if this is common.
Does not work. After following the instructions to the letter T.
Still does not set right.
I’ve got an older humidor that was my brother in laws. It had a analog hygrometer and it was off by at least 10%. This fit the bill , now I know the correct humidity and temp.
I like this hygrometer, however, the instructions for calibration are horrible. According to the instructions there was supposed to be a plastic bag to put it in, there wasn't. Also, the adjustment to get the final calibration did not work. Still not sure if it's entirely accurate but it matches my other hygrometer so I'm guessing it is.
The hygrometer was well packed and arrived safely. The included battery had a little tab that prevented current drainage prior to use. I haven't calibrated yet but like the fact that that's available.