Now this hygrometer:
This is very small and react quickly to changes.
Deviations are given at +/- 5% and the precision I have compared with the TFA 30.5015 Hygrometer (Accuracy 4%).
Both hygrometer react almost immediately to changes in temp. + Humidity, these changes result from the use of a dehumidifier at the other end of the room (distance 5m).
Here both voices in temperature and humidity match almost.
However, a disadvantage of this hygrometer, now if you want to read the min / max values or will be subject to zero, results inevitably always an immediate increase in humidity and thus distortion of values, this results from the small construction.
Who bothers this disadvantage, I recommend to look at times the TFA 30.5015 closer, it has a daily. Reset of Min / Max Temp. + Humidity, where the time itself can be chosen and add. another one. Memory.
However whom sufficient only the current value, is well advised with this pretty little hygrometer.
Because of the corruption of the statistics also only 4 stars!
Addendum:
I now have as a comparison again the TFA 30.5015 stand here and have to say this here, but differs somewhat.
Temperature is consistent, however, the TFA 30.5005 shows the range over 50% humidity at less as my other unit, approx 2-4% depending on the moisture content.
However, less than 50% both devices are on almost the same, since the deviation is 1-2% with each other.
