This is not a very good device. Bought 2 Boveda calibration packs to measure humidity. Probably 75% humidity. I put this Gove hygrometer and Boveda Butler hygrometer in both packages for 24 hours. The first reading in Boveda's first pack was. 1. Butler Boveda 74% 2. Govee 74.8% 3. Oria (this device) 83%. I thought ok I have a 2nd calibration pack I will vote for this unit if in doubt. Results of the 2nd package. 1. Boveda 73% 2. Gove 74.1% 3. Oria 84%. Oriya rose as the other 2 fell in percentage terms. This is a terrible product and if I had it in my humidor I would be spending thousands of dollars on cigars!
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