The ion mobility spectrometer E-NIMS is an advanced analytical device for fast and reliable trace detection of volatile compounds in industrial environments. E-NIMS combines state-of-the-art ion mobility spectrometry with an innovative non-radioactive ionisation technology. A special tailored electron beam source offering high stability, pulsed mode operation and intensity control allows efficient ionization and outstanding performance. With the E-NIMS, elaborate licensing, regulatory supervision and disposal of radio-active material, as it is neccessaray for most conventional ion mobility devices, belongs to the past. The E-NIMS opens up new areas of applications.