The GCS-SPEC-4GN drive-through radiation portal monitor is trusted worldwide to detect and identify radioactive nuclides. Its modular design allows GCS-SPEC-4GN to be configured with one or more radiation portal monitors to support high throughput security at border crossings, seaports, critical infrastructure, and high threat facilities.


  • Gamma and neutron sensitivity for superior detection

  • Spectroscopic detection provides exceptional nuclide identification

  • NORM discrimination minimizes nuisance alarms to less than 1%

  • Fully digital system design

  • Automatic system sensitivity monitoring