Product review (5 stars): I like the product - it works
I like the product - it works.. I have no way of measuring accuracy but it appears to be accurate. There is a feature that measures comfort level of humidity (Dry, Comfort and Wet) sometimes that information is not displayed but the humidity reading is displayed so I'm OK with that. It's a little difficult to read at night so I'm thinking of getting another one with a blue back light for the bedroom. I'll just use this one in a room that is better lit.

Update: The "comfort" indicator actually works.. it has moved from comfortable to dry and I'm guessing if it gets humid enough, it will indicate that. Just not sure what conditions cause it to display nothing. I continue to be satisfied with this product after using it for several weeks now.