Product review (3 stars): Good temperature/humidity logger
I purchased this data logger to monitor the temperature & humidity in our data center.  The connection to the PC is via USB and it works fairly well, however the software to gather data is rather archaic. The output is a text file which you can easily import into Excel for plotting if you need it. This was obviously an old serial data gathering application that was updated.  Functional for what I need, but if you're expecting an intuitive GUI, you'll be disappointed.  Don't even bother trying to set the parameters from the device, use the software.