Description
Product Overview
The FNIRSI GC-03 is a comprehensive 3-in-1 radiation detector designed to monitor nuclear radiation, electric fields, and magnetic fields, providing all-around protection for your health. It detects Gamma, Beta, and X-rays with a cumulative dose equivalent range of 0.00 uSv to 500.0 mSv and an energy range of 48 KeV to 1.5 MeV (±30%). For electromagnetic fields, it measures magnetic fields from 0.01μT to 99.99μT (or 999.9 mG) and electric fields from 1V/m to 1999V/m, with a frequency range of 50MHz to 3GHz (note: it does not support RF detection). The device includes a built-in lithium polymer battery, has package dimensions of 7.17 x 4.49 x 1.73 inches, weighs 11.99 ounces, and is manufactured by FNIRSI, with an ASIN of B0FC2PW9XK and a first available date of June 5, 2025. It ranks #30 in Lab Geiger Counters and has received positive customer reviews, averaging 4.3 out of 5 stars from 30 ratings.

Usage
The FNIRSI GC-03 is ideal for a wide range of environments, including homes, workplaces, laboratories, and outdoor settings, where monitoring radiation and electromagnetic fields is essential for safety. It is suited for individuals concerned about environmental health, such as homeowners checking for radon or EMF exposure, professionals in industrial or scientific fields requiring precise measurements, and outdoor enthusiasts exploring areas with potential radiation risks. Occasions for use include daily safety checks, emergency preparedness, and educational demonstrations, ensuring peace of mind in various lighting conditions with its adaptable display.
Why Choose Us
FNIRSI stands out with the GC-03 due to its multifunctional design that combines nuclear, electric, and magnetic field detection in one compact device, eliminating the need for multiple instruments. The product offers superior accuracy with detailed specifications, backed by positive user feedback and a high ranking in industrial categories. Its competitive edge includes real-time alerts, multiple display modes, and a day/night theme for optimal readability, ensuring reliable performance and ease of use without exaggerated claims, focusing on practical safety benefits.
Key Features
- 3-in-1 detection for nuclear radiation, electric fields, and magnetic fields to provide comprehensive environmental safety monitoring.
- Real-time visual, audible, and vibration alerts when radiation levels exceed safe thresholds, enhancing awareness and response.
- Three display modes (curve, professional, and quick view) for flexible data visualization and better assessment of radiation changes.
- Day and night theme display ensures clear readability in any lighting condition, from bright indoors to low-light outdoor settings.
- Track up to 50 alarm history sets for ongoing monitoring and analysis, supporting informed decision-making and safety tracking.
FAQ
What types of radiation does the GC-03 detect?
The GC-03 detects Gamma, Beta, and X-rays, covering a broad energy range from 48 KeV to 1.5 MeV with an accuracy of ±30%, making it suitable for various nuclear radiation monitoring needs.
Does this device support RF detection?
No, the GC-03 does not support RF detection; it is designed for electric and magnetic fields within specified frequency ranges, so it is not intended for radio frequency measurements.
How does the alarm system work for different types of fields?
For nuclear radiation, the alarm includes visual, audible, and vibration alerts when thresholds are exceeded. For magnetic and electric fields, over-limit status is displayed on the interface without vibration, sound, or light prompts, as noted in the product details.
What are the power requirements for the GC-03?
The device requires one lithium polymer battery, which is included, ensuring portability and convenience for use in various settings without the need for immediate recharging or external power sources.
Can I use this detector in low-light conditions?
Yes, the GC-03 features both light and dark display modes, allowing for optimal readability in any lighting, whether you are indoors, outdoors, or in dimly lit environments, so you can monitor safely at any time.





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