Product review (1 stars): I purchased this to monitor the humidity in my crawl ...
I purchased this to monitor the humidity in my crawl space.  Within a couple months it stopped sending updates to the receiver.  I would have to go in the crawl space and take the batteries out and reinstall and then it would work for a few day.  Now the humidity is a constant 31%.  I took the receiver down with me and the humidity reported 69% on the receiver under "inside" but 31% for "outdoors" even though the units were side by side..  I have them sitting on a table inside the house now side by side and the temp is 4 degrees different and the outside humidity is still 31%.  It is not reliable.  Wish I knew where to return it as defective.