Product review (4 stars): Humidity reading way off UPDATE
Outdoor unit's humidity reading way off (more than 5%, closer to 10% off), usually reads higher than actual rh in environment.  Considering returning item. Placed product next to outdoor sensor in living room and next to another accurite stand alone unit and got very different readings from all 3 units humidity wise, temp seems to be a little more accurate.

Update: I changed the location and now it seems to be reading humidity more accurately. I've decided to keep it and now feel like I can recommend this product. Just be patient and move the probe around to a different location if you feel like it isn't reading accurately.