All-Purpose Radionuclide Identification Device

identiFINDER® R400

Model: identiFINDER® R400
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With over 20,000 devices deployed globally, the identiFINDER® R400 is the most widely deployed handheld radionuclide identification device (RID) in the world. It is used to detect, locate, measure, and identify radioactive sources and produces rapid visible, audible, and tactile alerts that expedite response measures. The identiFINDER R400 provides operators the ideal balance of size and weight for a wide variety of monitoring scenarios including all-purpose surveying, emergency response, and environmental monitoring.

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  • Gamma and Neutron Detection

    NaI detector enables rapid isotope identification (ANSI N42.34 library) for threat determination; GM detector provides dose rate and total dose

  • Common Operating Interface

    Large display provides visual alarm confirmation and ability to view advanced spectral data; self-explanatory buttons provide easy, one-handed operation

  • Advanced Communications

    Like other identiFINDER products, the R400 contains on-board Bluetooth, web server, and GPS technologies

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Input Voltage
100-240 VAC (wall and car adapters and USB cable supplied)
System Overview
Battery Specification
Either rechargeable NiMH or 4x AA pack(supplied); ≥8h operational battery life; recharge ≤4h when using AC; recharge >4h when using USB
Detects neutron or gamma radiation emitted from natural occurrences in the environment, special nuclear material, industrial, or medical material
Operating Temp & Humidity
-4 to 122 °F(-20 to 50 °C) 10 to 80%;
Storage Temperature
14 to 95 °F(-10 to 35 °C)
Physical Features
Dimensions (L x W x H)
≤3.7 x 10.6 x 3.2 in (9.4 x 26.9 x 8.1 cm) -with battery
≤3.2 lbs(≤1.5 kg)
Cold Start Time
<2 mins from cold start
Sampling & Analysis
Nuclide Identification
According to ANSI N42.34
Sample Introduction
Absorption of EM gamma or neutron emissions
Sampling & Analysis
From a few seconds to minutes
System Interface
Data Storage
2GB internal memory; up to 600,000 spectra
On-board webserver software
Training Requirements
<10 mins for operator; 1 day for advanced user
Dose Rate & Accuracy (Cs-137)
0 nSv/h - 10.00mSv/h (0 nrem/h - 1.0 rem/h); ±30 %
Dose Rate Range
0 nSv - 1 Sv (0 nrem - 100 rem)
Energy Range [Gamma]
20 keV - 3 MeV
Gamma [High Dose Rate]
Gamma LaBr3
1.2 x 1.2 in (30 x 30mm)
Gamma Spectrum
1024 channels; 3 MeV
Geiger-Muller Dose Rate Range
100 µSv/h - 10mSv/h (10mrem/h - 1.0 rem/h)
Global Positionsing System [GPS] [removable]
12-channel SiRF III receiver
Neutron Sensitivity
2.6 cps/nv; ±20 %
Overload Dose Rate Range
10 mSv/h - 1 Sv/h (1.0 rem/h - 100 rem/h)
Scintillator Dose Rate Range
0 nSv/h - 500 µSv/h (0 nrem/h - 50mrem/h)
Service Interval
5 year factorymaintenance
Typical Resolution
4.5 % FWHM at 662 keV
Export Restrictions

Export Restrictions

The information contained in this page pertains to products that may be subject to the International Traffic in Arms Regulations (ITAR) (22 C.F.R. Sections 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. Sections 730-774) depending upon specifications for the final product; jurisdiction and classification will be provided upon request.

identiFINDER® R400 - Model: identiFINDER® R400

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