Product review (5 stars): Accurate and long distance!
Oh my goodness, after trying about 3 different indoor/outdoor thermometers we finally found one that worked!  We needed one that has humidity and can reach long range.  It's for the chicken coop which is about 200 feet from the house.  Prior thermometers that said they reached 300ft wouldn't work.  I have put the outside thermometer next to our mercury thermometer and within maybe 10 minutes it matched up (when moved from a different temp location).  Other thermometers have taken an HOUR to match up!  The chickens have survived 0 degree weather this year thanks to a thermometer which lets us know the inside coop temp!