Product review (5 stars): Great item. Reads in Fahrenheit degrees and %-RH
Great item.  Reads in Fahrenheit degrees and %-RH. I checked the humidity accuracy against my benchmark Caliber IV digital hygrometer and it agreed with it spot on.  I think the humidity accuracy is better than the stated +/-5%. I bought several to drop in each of my cigar humidors. These are just the right size, compact yet with large, readable digits.  I will be buying more of them. You can't go wrong!