Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Inaccurate

I have 2 other hygrometers, 1 is on a dehumidifier and another digital one. Both of the other hygrometers agree on the humidity, and disagree with this one. Even if I adjust the set screw so that the current humidity is accurate, it does not adjust properly when the humidity changes. It regularly says that the humidity is 10 - 20 percent higher than it really is.