Product review (4 stars): Replacement is working fine. Haven't moved remote outside yet
Tested inside the house and found the external unit's humidity sensor was reading very low, usually 1 or about 20 below the actual. Called support which took a long time on hold, but eventually got through and received a warranty replacement by mail. Replacement is working fine. Haven't moved remote outside yet. Bought to check and calibrate humidistats and check variances of temperatures in different areas of the house. Working fine for that purpose.