The Guardian™ Shield area monitor uses state-of-the-art passive scanning technology to detect changes in radiation levels emitted by gamma radiation. It is designed for remote operation, monitoring key locations in nuclear power plants, steel mills, healthcare facilities, laboratories, manufacturing facilities, educational establishments, and military installations. It utilizes spectroscopic technology to reliably identify nuclides present in a designated area.


  • Spectroscopic detection for superior nuclide identification

  • Centralized monitoring of multiple detectors from a single unit

  • Easy-to-use, browser-based user interface

  • Advanced analysis algorithms for high sensitivity results and minimal nuisance alarms

  • Fully digital design

Physical Specifications

  • Operating Configuration: Area monitor
  • Number of Gamma Detectors: 1 detector
  • Gamma Detector Material: Geiger–Müller (externally connected)
  • External Dimensions: 14.6 in L x 8.1 in W x 3.4 in D (37 cm L x 21 cm W x 9 cm D)
  • Weight: 5.5 lbs (2.05 kg)

Performance Specifications

  • Gamma Sensitivity: 0.01 µSv/h–10 mSv/h (1 µR/h–1 R/h)


  • Inspection Mode: Stationary
  • Ports: Ethernet

Environment / Safety

  • Temperature: -4 °F to 140 °F (-20 °C to 60 °C )
  • Humidity: 5 to 95% non-condensing
  • Environmental Protection: IP65