Purchased and installed a Neoteck 3-in-1 thermometer/hygrometer in a large warehouse during a nearly two week historic period below freezing in Oklahoma. With the hygrometer, my elderly mother was able to control the temperature in her storage room (outside) and in the insulated storage room enclosure (inside) separately to protect the water tank, pressure gauge, pipes and water softener. The "inside" temperature for the case was the most useful because she didn't have to lift the heavy lid to check the temperature inside the case. Placing a hygrometer probe in the case, which gives us the "internal temperature", made this possible. Very accurate.
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