Product review (4 stars): Plus or Minus 2 degrees
I buy 24 of these packages at a time. My only concern is not being consistence.  2 degrees + or - means it can be 4 degrees off from one to another. I use these for customers to monitor the humidity under their homes from inside their living area. When you are trying to maintain the humidity under 60% it become very important to be accurate. I wish this could be addressed.