FNIRSI GC-03 WT is a compact instrument for fast and accurate measurements that combines ionizing radiation detection (including gamma), electric field measurement, and magnetic field measurement in a single body. It offers fast response, a clear 2.4" color display, a real-time graph mode, and a triple alarm (sound, vibration, visual indication) with adjustable thresholds—ideal for home checks as well as professional use.
The FNIRSI GC-03 WT multifunction detector is built around an energy-compensated Geiger–Müller tube, ensuring stable and reliable measurement across a wide range. Thanks to its high sensitivity, it can monitor normal background levels and quickly alert you to increased values, with a response time of less than 5 seconds.
The large 2.4" color LCD display with adjustable backlight (day/night) shows readings clearly in multiple units. For better data interpretation, a dynamic real-time curve is available, and the device also stores up to 50 most recent alarm events.
Main advantages:
- 3-in-1: ionizing radiation + electric field + magnetic field
- Three modes: quick overview, professional mode, graph mode
- Triple alarm: audible, vibration, and visual (LED) with adjustable thresholds
- USB-C charging and built-in 1500 mAh battery for long operation
- Compact size and convenient control via rotary knob
- Firmware update capability for longer service life and new features
Package contents:
- FNIRSI GC-03 WT ionizing radiation detector
- USB-C charging and data cable
- User manual
Specifications
- Manufacturer
- FNIRSI
- Model
- GC-03 WT
- Device type
- Multifunction detector for ionizing radiation, electric and magnetic fields
- 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 overview mode, professional mode, dynamic graph mode
- Graph mode
- Dynamic real-time radiation change curve
- Alarm history
- Records up to 50 alarm events
- Alarm system
- Visual, audible, and vibration alarm with configurable threshold values
- Display
- 2.4" color LCD display
- Controls
- Rotary knob + function buttons
- Power
- 1500 mAh lithium-ion battery
- Charging
- USB-C (5 V / 1 A)
- Operating time
- Up to approx. 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
- Approx. 138 × 63 × 32 mm
- Weight
- Approx. 141 g
