The GuardianCM620 is a conveyor monitor that detects gamma sources in luggage, boxes, and parcels on a moving conveyor for enhanced security. The Guardian CM620 is easy to install, and extends the functionality of an existing conveyor system. Simply roll it into place, plug it in, and power it up.


  • Conveyor monitor

  • Easy to install and operate

  • Programmable detection parameters

  • Audio and visual alarm indicators

  • Universal mount

Physical Specifications

  • Operating Configuration: Self-contained conveyor monitor
  • Panel: Underneath
  • Number of Gamma Detectors: 1 detector
  • Gamma Detector Material: Organic plastic scintillation
  • External Dimensions: 19.92 in L x 27.56 in W x 7.09 in H (760 mm L x 700 mm W x 180 mm H)
  • Weight: 182 lbs (82.55 kg)

Performance Specifications

  • Gamma Detection: Meets ANSI 42.35 sources Co-57, Co-60, Ba-133, Cs-137, Th-23
  • Special Nuclear Materials (SNM) Detection: 10g of U-235 (HEU)


  • Port: Ethernet

Environment / Safety

  • Temperature: -4 °F to 131 °F (-20 °C to 55 °C )
  • Environmental Protection: Designed for use in sheltered areas