The Guardian MD210 is a mobile radiation monitor in a customized van that scans vehicles or containers for radioactive materials, without the need for frequent calibration. Designed for operational flexibility, the Guardian MD210 can be quickly and easily deployed for use in stationary mode at a temporary checkpoint or in drive-by mode, scanning as the system passes by the target or through a specified geographic region.


  • Mobile and stationary radiation monitor

  • Gamma and neutron radiation detection

  • Flexible inspection operations

Physical Specifications

  • Operating Configuration: Van-based mobile radiation monitor
  • Number of Gamma Detectors: 2
  • Gamma Detector Material: Organic plastic scintillator
  • Number of Neutron Detectors: 4 standard; 8 highly sensitive
  • Neutron Detector Material: He-3 tube
  • Dimensions: 68 in H x 61 in W x 21.5 in D (172 cm H x 155 cm W x 55 cm D)
  • Weight: 850 lbs (386 kg) per skid

Performance Specifications

  • Special Nuclear Materials (SNM) Detection: 1,000 g of U-235 (HEU) or 10 g of Pu-239 in 20 µR per hour background passage speed of 5 mph (8km/h); distance of 39 in (1 m)
  • Neutron Detection: Less than 200 g of plutonium in a shielded container that reduces the gamma flux to 1% of the unshielded gamma flux


  • Communications: Serial, Ethernet, Wireless

Environment / Safety

  • -4 °F to 122 °F (-20 °C to 50 °C)