Multifunction Ionizing Radiation Detector FNIRSI GC-03 BK

107,00 €
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FNIRSI GC-03 BK is a compact multifunction instrument for measuring ionizing radiation as well as electric and magnetic fields. It offers a fast response, a clear 2.4" color display, a real-time graph (curve), and a triple alarm (sound, vibration, visual warnings) with adjustable thresholds—ideal for home checks and professional field use.

The FNIRSI GC-03 BK detector is built around an energy-compensated Geiger–Müller tube, thanks to which it reliably detects normal background levels as well as elevated radiation values. Measurement is performed over a wide range and with high sensitivity, so you can easily assess both the current situation and longer-term changes. On the display you can select different units (e.g., μSv/h, μGy/h, mR/h, CPS, CPM) depending on what you are used to.

A major benefit is the 3-in-1 function—besides radiation, it also measures electric-field intensity and magnetic-field intensity, which helps evaluate the influence of appliances, electronics, or installations at home or in the workplace. For better clarity it offers three display modes (quick view, professional mode, and dynamic graph) and stores up to 50 recent alarm events.

Main advantages:

  • Geiger detector with fast response and stable measurement
  • Electric and magnetic field measurement in one device
  • Dynamic graph of real-time changes + alarm history
  • Triple alarm (LED/visual, audible, vibration) with adjustable thresholds
  • 2.4" color LCD with day/night mode and adjustable backlight
  • USB-C charging, 1500 mAh battery, firmware update support

Package contents:

  • FNIRSI GC-03 BK ionizing radiation detector
  • USB-C charging and data cable
  • User manual

Specifications

Manufacturer
FNIRSI
Model
GC-03 BK
Device type
Multifunction detector of ionizing radiation, electric field, and magnetic field
Detector type
Energy-compensated Geiger–Müller (GM) tube M4011 / J321
Radiation dose rate range
0.00 – 10,000 μSv/h (max. 10 mSv/h)
Radiation measurement resolution
0.01 μSv/h
Detector sensitivity
80 CPM/μSv
Radiation energy range
48 keV – 1.5 MeV (±30% for Cs-137)
Radiation measurement units
μSv/h, μGy/h, mR/h, CPS, CPM
Cumulative dose measurement range
0.00 μSv – 500.0 mSv
Electric field measurement range
1 – 1999 V/m
Electric field measurement accuracy
1 V/m
Magnetic field measurement range
0.01 – 99.99 μT
Magnetic field measurement accuracy
0.01 μT
Response time
< 5 seconds
Basic error
≤ 15%
Operating modes
Quick view mode, professional mode, dynamic graph mode
Graph mode
Dynamic curve of real-time radiation changes
Alarm history
Records up to 50 alarm events
Alarm system
Visual, audible, and vibration alarm with configurable threshold values
Display
2.4-inch color LCD display
Controls
Rotary knob + function buttons
Power supply
1500 mAh lithium-ion battery
Charging
USB-C (5 V / 1 A)
Operating time
Up to approximately 12 hours (depending on operating mode and display brightness)
Software update
Yes (firmware update)
Menu language
English, Chinese
Housing material
Plastic + metal front panel
Dimensions
Approximately 138 × 63 × 32 mm
Weight
Approximately 141 g
107,00 €