Product review (5 stars): I was extremely pleased with my Hygrometer
I was extremely pleased with my Hygrometer. The cost is unbeatable and I use it daily. I have a humidifier and run during winter months without knowing if I had to little or to much humidity in dry winter air that was healthy for me and my dogs  allergies as well as myself. Now it is showing me the range I'm in to be comfort level and the idea of a happy face in the zone was funny. I liked that . Go USA !!!