1.  Gamma Detector - Linear Range with SCC or DTC2 
  1) 133-2 : 1 μSv/h to 50 mSv/h
  2) 133-3 : 1 μSv/h to 250 mSv/h 
  3) 133-4 : 10 μSv/h to 500 mSv/h
  4) 133-6 : 40 µSv/h to 1 Sv/h 
  5) 133-7 : 250 μSv/h to 10 Sv/h

2.  Common
  1) Energy Compensated GM
  2) Halogen Quenched
  3) Waterproof Versions Available
  4) Stainless Steel Tube