The dew point measuring transducer MTR 2.1/SA offers outstandingly simple technical solutions where the dew point of technical or other gases represents an important measuring or regulating value. The proven design of the probe permits favorable measuring arrangements for the control of technical processes. The MTR 2.1/SA consists of water protective packaging with the electronic control/evaluation system and a probe which is connected with plug connector. The probe contains in the head an integrated sensor ship which is mounted on a miniature cooling element and works according to the Heinze CCC*dew point measuring principle. Different design of probes are available. This is the possibility for an optimal adaption to special application.