Underwater Radionuclide Identification Device

identiFINDER® R425 UW: Underwater radionuclide ID, anywhere.

Purpose-built for maritime and dive teams, the R425 UW is a handheld radionuclide identification device that works underwater, on deck, and dockside. Choose gamma-only or gamma+neutron models with NaI(Tl) or LaBr₃(Ce) detectors.

It’s IP68 to 20 m submersion and MIL-STD-810G salt/fog compliant, with a 2.7″ sunlight-readable display. Use the companion app and open APIs to move from detect → identify → report in one workflow.

Why Teams Choose identiFINDER R425 UW?

• Underwater certainty: IP68 to 20 m; built for dives, drops, and wash-downs.
• Faster finds: ≤20 s cold start; high gamma sensitivity for quicker alarms.
• Better IDs: LaBr₃(Ce) ≤3.5% or NaI(Tl) ≤7% FWHM at 662 keV; 1024-channel spectra.
• Mission-proof power: Internal Li-ion + hot-swappable external (16650 or 2× CR123).
• Trusted data & comms: BLE 5.0, USB-C web UI, N42.42 files; ATAK/MFK integration via open API.

identiFINDER R425 UW Key Specs

• Modalities: Gamma (G/LG) or Gamma+Neutron (GN/LGN).
• Gamma detectors: NaI(Tl) 45×45×45 mm (SiPM) or LaBr₃(Ce) 35×35×35 mm (SiPM).
• Neutron (GN/LGN): Dual ZnS(Ag) panels, moderated.
• Energy range: 20 keV–3 MeV; 1024-channel spectra; sourceless stabilisation.
• Dose-rate: 10 µrem/h–1 rem/h (±10%); HDR 1–100 rem/h (±30%) via compensated GM.
• Resolution @ 662 keV: NaI ≤7% FWHM; LaBr₃ ≤3.5% FWHM (typical).
• Ruggedisation: IP68, 20 m (66 ft) submersion; MIL-STD-810G salt/fog.
• Display/UI:7″ (400×240) sunlight-readable; 3-button workflow.
• Comms & data: BLE 5.0 to iOS/Android app; USB-C web UI; optional Wi-Fi/cellular; ANSI N42.42 files; open API (ATAK, Mobile Field Kit, more).
• Storage: 8 GB internal.
• Power: Internal Li-ion + hot-swappable external (1× 16650 or 2× CR123).
• Start-up: ≤ 20s cold start.
• Operating range: −30 to +60 °C; 0–100% RH.
• Size/weight: 235×100×95 mm; ≤1.2 kg (≤2.6 lb).

What’s in the Kit?

R425 UW instrument, internal Li-ion (installed), external battery sled with 1× 16650 Li-ion (or 2× CR123 option), AC power adapter (100–240 VAC), USB-C cable, quick-start guide, carry case. (Contents may vary by configuration.)

Frequently Asked Questions

Does it detect neutrons?
Yes. GN/LGN models add moderated ZnS(Ag) neutron detection to 360° gamma.

How rugged is “UW”?
It’s IP68 rated for submersion to 20 m and MIL-STD-810G salt/fog compliant for maritime use.

What devices/apps does it work with?
Pair via Bluetooth Low Energy to iOS/Android companion apps; use the built-in USB-C web interface; integrate with ATAK/Mobile Field Kit via the open API.

Are identifications on-device and standards-based?
Yes. On-device nuclide ID to ANSI N42.34 with data files saved in ANSI N42.42 format.

What’s included in the kit?
Instrument, internal Li-ion, external battery option, AC adapter, USB-C cable, quick-start guide, and carry case (kit contents may vary by region).

Book a demo with a FLIR-certified specialist and see R425 UW perform underwater.

Compliance note: Radiation detection equipment may be subject to export controls and local authorisations. Buyer is responsible for compliance with applicable laws.