Product review (5 stars): Worked Right out of the Box - Very Accurate
I seasoned my cigar humidor for about a week, then stabilized it using 72% Boveda packets. This hygrometer reads between 71-72% RH and the temperature matches other thermometers I have... so it seems to be very accurate out of the box.

It has a small profile which makes putting it in a humidor very nice as it doesn't take up much space. For the money, this was a very good purchase and seems to be doing the trick for its intended application.