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Accurate for temperature, but not for humidity
on November 26, 2012
With a house full of hardwood flooring and a grand piano, it is important that we maintain a humidity level as consistent as possible. For the first few months after purchasing this device, we were glad (although a bit skeptical) to see the humidity registering 40 percent, give or take a few percent. When the temperature dropped to minus 20 degrees outside, we expected to return home from a one-week vacation to find ice had formed at the inside corners of our windows based on previous experience with high indoor humidity and cold outside temperatures. Instead, no ice -- so this confirmed our suspicion that the LaCrosse wasn't accurate. A few days later, our piano technician measured the humidity at 25 percent with his expensive hygrometer -- a difference of 15 percent between the two meters. I trust this fellow's equipment -- he tunes pianos for our city's philharmonic orchestra. He mentioned the LaCrosse device works accurately in regions with very high humidity (such as the southern U.S.), but not in our dry climate. If not for the low price paid, we would have been disappointed in this product. At least the temperature measurement is accurate.