For indoor conditions the meters were fairly normal and agreed with higher-end factory calibrated meters. But only that. Hygrometer variation was >10% at higher outdoor temperatures (40c). The minimum recognized humidity is 18% for all of my meters (not 10% +/- 5%, as the specs say), even when actual RH is measured in the low single digits by my more accurate meters (which I had hoped would read 10% or 15% at most).
Arrived OK, 57 days