FNIRSI GC-03 WT Multifunctional Ionizing Radiation Detector

The FNIRSI GC-03 WT is a professional multifunctional ionizing radiation detector designed for accurate measurement of gamma (γ), X-ray (X), and beta (β) radiation. Featuring a high-sensitivity Geiger-Müller tube (J321) and a 2.8-inch TFT color screen, this device provides real-time dose rate and cumulative dose monitoring with adjustable alarm thresholds. Ideal for safety professionals, researchers, and hobbyists, it offers reliable performance in a compact, portable design.

Advantages

High sensitivity (80 CPM/μSv/h for Co-60) ensures early detection of radiation changes. The large color display shows multiple units (μSv/h, μGy/h, mR/h, cps, cpm) and historical data. Built-in 1100mAh lithium battery with USB Type-C charging provides up to 6 hours of continuous operation. Alarm functions include sound, vibration, and visual light for versatile alerting.

Suitable for

• Radiation safety monitoring in laboratories, hospitals, and industrial sites
• Environmental radiation surveys and geological exploration
• Personal safety for workers in nuclear or medical fields
• Educational demonstrations and hobbyist use

Key specifications

• Detection Types: Gamma (γ), X-ray (X), Beta (β)
• Sensor: Geiger-Müller Tube (J321)
• Dose Rate Range: 0.00-1000 μSv/h
• Cumulative Dose Range: 0.00 μSv - 9999 mSv
• Energy Response: 48 keV - 1.5 MeV (≤ ±30% for 137Cs)
• Relative Intrinsic Error: ≤ ±10% (at 1 mSv/h)
• Sensitivity: 80 CPM/μSv/h (for Co-60)
• Display: 2.8-inch TFT Color Screen
• Power: Built-in 1100mAh Lithium Battery, USB Type-C
• Battery Life: Up to 4-6 hours
• Alarm: Adjustable thresholds, sound/vibration/light
• Operating Temperature: -25°C to 50°C
• Humidity: ≤ 95% RH (non-condensing)
• Data Logging: Real-time and historical storage
• Response Time: < 10 seconds
• Material: ABS Plastic

Recommendations

For optimal performance, calibrate the device periodically and store in a dry environment. Use the USB Type-C cable for charging and data transfer. The detector is portable and suitable for field use.