Product review (2 stars): Very Inaccurate
The humidity reads low by 10 or more percent. I compared it to another hygrometer in the house and found it reading very low. To check it out further, I put it outside alongside my other hygrometer. According to local weather stations, the outside humidity was 63%. This device read 44%. The other hygrometer read 62% very close to the 63% number. The temperature was accurate. I will be returning this item.