Title: mine was defective
Review: I bought this product and the optional calibration kit that came with it. Following the instructions it turned out that it was impossible to get it properly calibrated (turning it all the way up still left it reading 4% lower than it was supposed to read). Unfortunately I was traveling and failed to report its failure in the first 30 days so I guess I'm stuck with a worthless Hygrometer (or perhaps I can just add 4 and assume it is right then - two stars instead of one because my hunch is that adding 4 will get it in the ballpark so it is close enough).
Is this product review negative?