If the Humidity and resultant Dew Point is inaccurate, the sensor array will need calibrating or replacing.

  1. Here is a guide on testing the hygrometer accuracy: https://help.ambientweather.net/help/how-can-i-test-the-accuracy-of-my-hygrometer/
  2. If the humidity error is excessive, the sensor will need replacing. We have a one year warranty. Visit: www.AmbientWeather.com/rma.html
  3. For out of warranty sensor replacement, please visit:  https://www.ambientweather.com/amws1090thr.html

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Product Manual
https://ambientweather.com/mwdownloads/download/link/id/525/