Title: Accurate out of the box
Review: I bought this to keep in my small humidor which had about 20 cigars in it and 2x 72% Humidipacks. I put it inside and checked the next day and it read 72% and has read that ever since. Exposing it to the room for just a few minutes shows the humidity was around 60% in the room, so I know it works. Great little Hygrometer!!
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