
Bought two of these, one on top and one on bottom. Before I separated them, I turned them on and kept them close. The temperature matched almost exactly. The only deviation is maybe 0.1 degrees Fahrenheit. However, when it came to humidity, one was always 2 percentage points higher than the other. For example, one shows 41% and the other 43%. If it went down to 39%, the other would be 41%. etc. In the winter they were only about a week. Close enough for me I think.

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