Product review (2 stars): Works on XP machines only
I bought the Extech RHT10 from a local Grainger Supply store and spent around 10 hours trying to get it installed on a Vista and Windows 7 platform without success. In desperation, I drug out an old XP machine and finally got it working.  Although my XP machine worked for me, I was hoping to be able to download the RHT10 data onto ANY computer.

If you are still thinking about buying this unit, do a web search on this phrase "RHT10 and TH10 Datalogger not being recognized or not connected"  and you will find a lengthy blog space from people who have had problems with this unit.