The hermetically sealed probe, including the GM detectors and all electronic components, operates fully autonomously and is independent of any physical connections, thus resisting extreme climatic and environmental conditions. Energy-saving chip technology allows maintenance-free non-stop operation of the GammaTRACER probe. The time resolved measurement values are stored together with the auxiliary and QA parameters. Data download and parameterization can be performed via an interactive infrared or cable port. DataEXPERT, a professional user-friendly database, communication and analyzing software guarantees both simple and safe access to the stored data as well as their powerful visualization and fast, precise analysis. Additional interface possibilities for online and real-time data transmission, ranging from wired modules to sophisticated wireless transmitters, meet a wide variety of user needs.