The meter reacts very fast, but there are no miracles. In airflow change at open windows, etc. It lasted still 2-3 minutes until you can read reliable data.
Purchase decisive was the excellent long-term stability of the sensor specified (SHT71) and that there can be no further drift hazards for the digital interface.
Nevertheless, you should also like the PCE-555 View Amazon zzt even 10 cheaper, almost 50). Here like the much longer sensor rod, the two digits behind the decimal point, the switchable display lighting, the bag, apparently handier housing, but without mounting foot. If my Amazon would this device displayed when searching, then I probably would have chosen.
But due to the highest possible precision "my" TFA H560 meter I am very satisfied.
Full 5 stars from me because the device even exceeds expectations. Of course, I can think of some improvements, but the review is not a "request concert" but (...) !!!