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INFO:
(DRY): Relative humidity below 40% RH at any temperature |(COMFORT): The temperature range is (20 ~ 30 )℃ the relative humidity is (40 ~ 70 )% RH |(WET):Relative humidity above 70% RH at any temperature.
Digital Thermometer lCD hygrometer Indoor humidity Meter tester Temp Monitor ℃/℉  | eBay Australia