The RAE Systems GammaRAE II R is a rapid gamma radiation detector and dosimeter in a single instrument. The GammaRAE II R is designed specifically to meet the needs of national security and emergency responders

List of Benefits

  • Combined Detector and Dosimeter
  • Intrinsically Safe
  • Immersible
  • Loud Alarm
  • Dose Accumulation

Due to its high sensitivity at low radiation levels, GammaRAE II R can alert users of the presence of a radiation threat well before reaching health-threatening levels. Its high range and dosimeter functionality allow security and emergency responders to track their dose.

GammaR AE II R Kit includes:

  • GammaRAE II R personal radiation detector/dosimeter
  • Belt clip
  • 2 AA alkaline batteries
  • Wrist strap
  • User’s guide
  • Calibration certificate
  • ProRAE Studio Radiation software

Key Features

  • Sensitive CsI scintillator for fast search capability and response
  • Energy-compensated PIN diode sensor for high dose rate range and accurate dosimeter capabilities
  • Prominent visible, audible and vibration alarms
  • Immersible in water for easy decontamination
  • Top-mounted, invertable display
  • Continuous digital readout in Rem/hour (μR/h & mR/h) or in Sievert/hour (μSv/h & mSv/h) and counts per second (cps)
  • Two AA alkaline batteries last up to 600 hours
  • Large, 30,000-point datalog capacity, downloaded via cable-free Bluetooth® connection


  • Customs and border patrols
  • Law enforcement
  • Security officers in nuclear power facilities, banks, government laboratories, medical facilities
  • Military
  • Government agencies
  • HazMat teams
  • Fire departments
SpecificationDetail Description
Radiation Sensors 3cc CsI (TI) with Photodiode (Low channel) Energy-Compensated PIN Diode
(High channel)
Energy Range 0.06 to 3.0 MeV
Dose Equivalent Rate (DER) Range for 137Cs 1 μR/h to 600 R/h (0.01 μSv/h to 6 Sv/h)
Accuracy of DER ±20%
Dosage Range 1 μR to 999.9 R (0.01 μSv to 9.9 Sv)
Background Reference Background level reference automatic on start-up, plus user-initiated as
needed (Search Mode only)
Calibration None required. Periodic functional test recommended using 1 μCi and 16 μCi
137Cs check sources. Factory calibration available if needed.
Time to Alarm <2 seconds
Alarms Loud audible buzzer (85+ dB @ 30 cm), built-in vibration alarm, highly visible LED lights on both
sides of LCD graphic display
Alarm Settings Dose Rate
Search Mode Alarm threshold based on variations in local background level
Safety Mode User-programmable low and high alarm thresholds based on dose rate
User-programable low and high alarm thresholds based on dose
Stay Time Alarms vary by time (3 min to 2 hrs, once per minute; <3 min, once every 5 sec; 0 min
and beyond, same as dose alarm)
Datalogging and Communication
Datalog Size 30,000 data points (20 days at 60-second intervals)
Datalog Modes Continuous Logs data at all times, Event-Driven
Datalog Interval User programmable, 1 to 3,600 seconds
Communication Built-in Bluetooth® radio interfaces with computer for datalog download and configuration changes
Battery 2 AA alkaline batteries
Battery Runtime Up to 600 hours
Operating Environment
Temperature -4° F to 122° F (-20° C to 50° C)
Temperature Alarm Temperatures above 122° F (50° C) cause a high-temperature alert message
Humidity 0% to 95% (non-condensing)
Shock Resistance Passes drop test from 59" (1.5 m)
IP Rating IP-67 (immersible)
Intrinsic Safety Certified to meet Class I, Div. I, Groups A, B, C, D, T4 ATEX II IG EEx ia IIC T4
Physical Characteristics
Display Graphic LCD with 1.2” x 0.75” (30.5 mm x 19 mm) viewable area can be flipped for view by user;
Radiation intensity displayed in cps or dosage rate in divisions of R/h or Sv/h
Direct Readout Dose rate, peak, min, total dose, battery status, time, temperature
Ergonomics Nonslip rubber housing with grippable ridges securely fits hand or glove
Keypad 2 operation/program buttons
Size 4.92" x 2.68" x 1.38" (125 mm x 68 mm x 35 mm)
Weight 9.5 oz (270 g)
Attachments Rugged metal belt clip and wrist strap

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