Ive never used that brand but you can test it. I keep cigars and doing so you need accurate thermometers and hygrometers. Google how to calibrate a hygrometer or visit this link I pulled up on it. http://www.cigarsinternational.com/c...e/29/salt-test
While I doubt you can adjust yours you can at least figure out if its close to correct. Doing this test will give you the ability to subtract of add to the displayed number to know what your humidity is.
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