The GMH 33xx devices are universal precision hygrometer / Thermometer and flow meter with additional Thermocouple input in one. The plug-in probes are interchangeable
without recalibration, because your calibration data are on an integrated memory stick (TFS ....) or they are interchangeable by the high mechanical precision (STS ...).
The thermocouple input T2 is optimized to to be able to quickly absorb surface temperatures to e.g. to display the dew point directly
For connection of TFS0100E humidity probe
With temperature input type k for surface probes
Measurement of dewpoint distance
Long batterry operation time