I bought this item to accurately record the humidity in reptile cages. Not the use for which it was intended, but the "pet store" variety of hygrometers typically used in reptile cages are inaccurate by up to 20%. I bought 6 XIKAR Hygrometers and am very pleased with the product. They were easy to calibrate and so far are all reporting humidity accurately. I highly recommend this product and the supplier.
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