i second that wireless digital hygro. funny that my Walmart $1.99 fridge magnet hygro can give me the same reading at the digital (after i calibrated it). just look for one you can adjust (sometimes you need to pry it open and move the dial)
I also use the Oregon Scientific (wireless).... will let you use up to three different sensors. The one I have sets itself by the atomic clock in Colorado.... but I'm too far away for that.
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