The IDM-200-V Interchangeable Detector Module from ORTEC is a high performance gamma-ray spectrometry “building block” for use in multiple applications. It is a completely self-contained package, comprising a single, large-area, mechanically cooled high-purity germanium (HPGe) detector of standardized crystal dimensions and all necessary spectrometry electronics in a RUGGED, low-power configuration. The IDM-200-V includes everything needed for the high resolution spectrometry task, producing either a resultant spectrum in memory or delivering a digitized pulse stream in list mode format to an attached PC for further analysis.