Great, thanks That worked. Was just a bit confused because it seemed to ask for a desired unit number.

HI, Just starting off using the VI 2UnitSelect.vi in LabView, but do not have any previous experience using LabView. For some reason when I run this vi I get a window popping up stating "No Desired Units match Unit B" and the same for Unit A. It detects the two TC-08 dataloggers, but I get this mess...