The PC software is rudimentary but better than nothing. Annoying eternal standing and USB key press if you want to read the data. Place the unit in addition to the PC appear as useful in the manual but is not recommended due to possible disorders.
Four stars I forgive because the data very "fall" happen to me. The humidity, I can not independently measure but thermometer I have for comparative measurements, a larger number. Show all on the same, only the TFA Logger is 2-3 ° beside it - it makes it warmer than it is ;-). Manufacturer's specification is + -1 °