Radiation Detector - FNIRSI GC-03 WT Multifunctional Ionizing Radiation Detector 138 × 63 × 32 mm 141 g
Product reference: 14-5905156102347

The multi-function detector measures ionizing radiation, electric and magnetic fields using a Geiger-Muller tube and a 2.4-inch color display. Visual, audible and vibration alerts are configurable, while USB-C charging and a compact 138 × 63 × 32 mm body ensure convenient use; the device weighs approximately 141 g.

Radiation Detector - FNIRSI GC-03 WT Multifunctional Ionizing Radiation Detector 138 × 63 × 32 mm 141 g

Product reference: 14-5905156102347

The multi-function detector measures ionizing radiation, electric and magnetic fields using a Geiger-Muller tube and a 2.4-inch color display. Visual, audible and vibration alerts are configurable, while USB-C charging and a compact 138 × 63 × 32 mm body ensure convenient use; the device weighs approximately 141 g.

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FNIRSI GC-03 WT multifunctional ionizing radiation detector


Multifunctional detector that measures ionizing radiation, electric and magnetic fields. It is equipped with a Geiger and Mueller tube and a 2.4-inch color display. Visual, audible and vibration alerts can be set. The detector is charged via USB-C, its dimensions are 138 × 63 × 32 mm, weight - about 141 g.


  • Multifunctional compact detector that measures ionizing radiation, electric and magnetic fields in one device
  • Energy-compensated Geiger-Muller tube measuring 0.01-10,000 μSv/h radiation; response time less than 5 seconds
  • 2.4-inch color display with quick view, professional and real-time graph modes
  • Visual, audible and vibration alerts can be set, and up to 50 alert events can be stored

Product information

Product type Multifunctional ionizing radiation, electric field and magnetic field detector
Brand FNIRSI
Model GC-03 WT
Detector Energy-compensating Geiger-Muller tube
Dimensions 138 × 63 × 32mm
Weight About 141g

Measurement specifications

Radiation dose range 0.01-10,000 μSv/h
Radiation resolution 0.01 μSv/h
Detector sensitivity 80 CPM/μSv
Radiation energy range 48 keV-1,5 MeV
Radiation units μSv/h, μGy/h, mR/h, CPS, CPM
Total dose range 0.00 μSv-500,0 mSv
Electric field range 1-1,999 V/m
Electric field resolution 1 V/m
Magnetic field range 0.01-99.99 μT
Magnetic field resolution 0.01 μT
Reaction time Shorter than 5 seconds
Basic measurement error ≤ 15%

Display and control

Screen 2.4 inch color LCD screen
Display modes Quick View, Professional, and Real-Time Graph Modes
Management Rotary knob and function buttons
Warning system Configurable visual, audible and vibration alerts
Warning memory Up to 50 alert events
Menu languages English and Chinese

Power supply and construction

Battery 1,500 mAh lithium-ion battery
Charging USB-C, 5V/1A
Operating time Up to approximately 12 hours, depending on usage and screen brightness
Housing Plastic body with metal front panel
Firmware updates Supported

Complete set

Kit contents
  • FNIRSI GC-03 WT radiation detector
  • USB-C charging and data cable
  • User manual

Safety warning

Important Use the detector for measurement and monitoring purposes only. It does not protect against or eliminate radiation and is therefore not a substitute for professional radiation protection equipment, certified dosimetry or official safety assessment. When measuring in potentially hazardous environments, please follow the user manual and applicable safety requirements.

Height50mm
Length200mm
Weight210 g
Width100mm
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