





Description:
FNIRSI GC-03 is a multifunctional radiation detector, a professional instrument for measuring nuclear radiation, mainly used in various occasions such as home, office, car, outdoor environment, etc. It uses a 2.4-inch high-definition color screen and supports real-time monitoring of nuclear radiation, electric field strength, magnetic field strength, etc. The meter supports three alarm modes: sound, vibration, and light.
Specifications:
Model | GC-03 |
Display Screen Size | 2.4-inch color screen |
Backlight | Brightness Adjustable |
Power Supply | TYPE-C (5V/1A) |
Battery | 1500mAh |


Measurement Parameters Specifications:
Nuclear Radiation |
Range: 0.01usV/h-999.99usV/h Accuracy: 0.01usv/h |
Electric Field |
Range: 1V/m-1999V/m Accuracy: 1V/m |
Magnetic Field |
Range: 0.01μT-99.99μT Accuracy: 0.01μT |
Radiation Power | 0.2-1000mW/m² |
Nuclear Radiation Detection:
Detection Radiation Type | Ionizing radiation (gamma rays, etc.) |
Detector | Energy compensation GM tube (Gege counter tube) |
Dose Current Rate | 0.00-10000uSv/h (10mSv/h) |
Cumulative Dose Equivalent | 0.00uSv-500.0mSv |
Energy Range | 48keV-1.5Mev ≤ ±30% (for 137Cs-) |
Sensitivity | 80CPM/uSv |
Dose Unit | uSv/h、uGy/h、mR/h、cps、cpm |
Alarm Mode | Light, vibration, sound |
Features:
- 3-in-1 Radiation Detection: Detects electric fields, magnetic fields, and nuclear radiation — all in one device for comprehensive safety monitoring.
- High-Precision Geiger Counter Tube: Equipped with J321/M4011 GM tube for precision detection, high sensitivity and low power consumption.
- Wide Application Scenarios: Ideal for use around nuclear power plants, seafood, imported food, CT scans, microwaves, laptops, refrigerators, washing machines, and more.
- Dynamic Curve Mode + 50 Alarm Records: Real-time radiation trend visualization with up to 50 stored alarm history records for traceable monitoring.
- Triple Alarm Modes with Custom Thresholds: Get alerts via visual, audible, and vibration modes. Set custom alarm limits for different working conditions.
- Wide Measurement Range: Measures dose equivalent rate from 0.00–10,000μSv/h (10mSv/h) and cumulative dose up to 500.0mSv, suitable for both daily and professional use.
- Full Spectrum Ray Detection: Supports detection of α, β, γ, and X-ray radiation, covering various radiation types.
- Smooth Rotary Knob Control: User-friendly rotary knob design makes switching functions quick and intuitive.
- 1500mAh Long-Lasting Battery: Large-capacity battery ensures extended operation time, perfect for field and mobile use.




Package Included:
- 1 x FNIRSI GC-03 3-IN-1 Electromagnetic Radiation Detector
- 1 x GC-03 Host
- 1 x Packing Box
- 1 x Data Cable
- 1 x User Manual