I am trying to understand results I have gotten, but my searches have led to conflicting information. Forced air incubator in a room. Room RH is 58%, temperature 65F. Bator temperature is 99.6F, and it says the RH is 28%. This is a Brinsea Ova Easy 100, so the equipment should be accurate. My hygrometer I used for the room has been verified as being 3% lower than the Brinsea readings (so reasonably accurate). There is no water inside the bator (no nothing other than its metal shelves). Using various online calculators, with the ambient air where it is, the bator should be reading ~16.5% RH...but its 28%. The only thing that makes sense of my observations is a change in the dew point temperature. If the room has a dew point of 50F, and the bator has a dew point of 58F, then I get the right RH numbers...but I don't get how the dew point could be different inside the bator.