Product review (5 stars): PERFECT, WONDERFUL, AMAZING!!!
We are using these in a laboratory setting in which we need to have accurate temps and humidity readings for the rooms they are in.  Our first purchase was a trial to see if they would work.  Well, they DO and they do it VERY well!!  We are on our second purchase and we LOVE these monitors!!!!!  The large screen display is wonderful.  You can read them without having to enter the rooms, if you don't want to and they are placed many feet away!  We also love that these have the ability to tell you the extremes the room has experienced, the lows and highs for both temperature and humidity.  That has been perfect for us, as we have to record each room's stats daily.  I would HIGHLY recommend these to anyone!