RAE Systems NeutronRAE II is a personal radiation detector that provides rapid detection of both gamma and neutron sources. The NeutronRAE II’s high sensitivity can alert users to the presence of a radiation threat well before they might be exposed to health-threatening levels.

List of Benefits

  • Quick detection of radiological threats
  • Alerts the wearer with a loud audible buzzer, bright flashing LEDs, and a built-in vibration alarm
  • Water resistant/immersible
  • Dose accumulator tracks total dose exposure from gamma radiation
  • NeutronRAE II is designed in compliance with IEEE ANSI N42.32 standard


The NeutronRAE II features a loud audible alarm, bright flashing LEDs, and a vibration alarm. Each alarm can be disabled separately. NeutronRAE II’s water-resistant design makes for reliable operation in wet environments and for easy decontamination.

Detector kit includes :

  • NeutronRAE II personal radiation detector
  • Belt clip
  • 2 AA alkaline batteries
  • Wrist strap
  • User’s Guide
  • Calibration certificate
  • ProRAE Studio II software


Key Features

  • Detects neutrons from weapons-grade Plutonium (239Pu)
  • Sensitive CsI and LiI scintillators for excellent search capability and fast response
  • Continuous digital dose rate readout in μR/h or μSv/h for gamma radiation, and counts per second (cps) for neutron radiation
  • Continuously accumulated total dose readout for gamma radiation
  • IP-67, immersible in water for easy decontamination
  • Two operation keys, simple intuitive programming
  • Continuous datalogging with a large10,000-point datalog capacity


  • Alerts first responders to radioactive threats
  • Customs and border patrols
  • Security officers in nuclear power facilities, banks, government laboratories, medical facilities
  • Military
  • Government agencies
  • HazMat teams
  • Police and fire departments
SpecificationDetail Description
Radiation Detector - Gamma 1cc CsI (TI) with Photodiode
- Neutron 1cc LiI (Eu) with Photodiode
Energy Range - Gamma 0.06 to 3.0 MeV
- Neutron thermal to 14 MeV
Dose Equivalent Rate (DER) Range for 137Cs 1 to 20 mR/h (0.01 to 200 μSv/h)
Accuracy of DER ±20%
Neutron Measuring Range 1 to 100 cps
Dose Range 1 μR to 999 R (0.01 μSv to 9.9 Sv), gamma only
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 0.5 μCi or higher 137Cs check source.
Factory calibration available if needed.
Alarm Alerts Loud audible buzzer (85+ dB @ 12"/30 cm), built-in vibration alarm, highly visible LED lights on
both sides of LCD graphic display, can be separately enabled or disabled
Alarm Modes Search Mode Gamma alarm threshold based on variations in local background level
Safety Mode User-programmable low and high gamma alarm thresholds based on dose rate
(applies to gamma alarm only)
Datalogging and Communication
Datalog Size 10,000 data points (20 days at 180-second intervals)
Datalog Modes Continuous Logs data at all time
Event-Driven Starts logging data on alarm
Datalog Interval User programmable, 1 to 3,600 seconds
Communication Built-in Bluetooth® radio interfaces with computer for datalog download
Battery 2 AA alkaline batteries
Battery Runtime 500 hours
Operating Environment
Temperature -20° C to 50° C (-4° F to 122° F)
Temperature Alarm Temperatures above 50° C (122° F) 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)
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 (gamma, neutron) or dose rate in μR/h or μSv/h (gamma only)
Direct Readout Dose rate, peak rate, minimum rate, total gamma dose, battery status, current time and date,
current time since start-up, internal 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 10 oz (283 g)
Attachments Rugged metal belt clip and wrist strap
Specifications are subject to change

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