I found a combination digital thermometer/hygrometer with one probe. (Most of the ones available now are wireless).... anyway when I put the probe in the water weasel, I know the probe will be reading the temp inside there. Where is the humidity reading coming from -- the probe inside the water weasel or the air in the incubator. My device reads temp, inside and outside and humidity... does that make any sense? How can it read the humidity acurrately if it's in the weasel?