FNIRSI GC-03 Multifunction Radiation Detector

Chinese domestic source identified, quotation verification required

What is the GC-03?

The FNIRSI GC-03 is a multifunction detector that combines a Geiger counter with electric-field and magnetic-field measurement. It is intended for users who want one portable device for ionizing-radiation awareness and basic electromagnetic-field checks.

The GC-03 may suit household checks, environmental observation, electrical equipment screening and portable radiation awareness. Nuclear radiation and electromagnetic fields are different hazards, so buyers should evaluate each measurement function against its own range, accuracy, calibration and application requirements.

Sourcing status: A public Chinese manufacturer or domestic retail route has been identified for this named model. Before accepting an order, NRD verifies the seller, exact revision, package contents, quantity, supporting documents and current commercial terms.

China sourcing and B2B quotation

Tell us your application, quantity and destination.

We will verify the current domestic seller, exact model revision, package, documents, MOQ, lead time and commercial terms before quotation.

B2B priceRequest a quotation
AvailabilityConfirmed per enquiry
Source modelGC-03

What are the key GC-03 specifications?

These values are translated and rewritten from the named manufacturer’s public product information. They are useful for initial comparison, but the current data sheet, detector revision, test conditions and exact configuration must be confirmed before ordering.

Parameter Manufacturer-stated value Buyer check
Nuclear detector J321 or M4011 Geiger Muller counter, subject to current revision Confirm for the exact quoted unit
Ionizing radiation Gamma, X-ray and hard beta Confirm for the exact quoted unit
Dose-rate range 0 to 10,000 µSv/h, equivalent to 10 mSv/h Confirm for the exact quoted unit
Accumulated dose 0 to 500 mSv Confirm for the exact quoted unit
Energy range 48 keV to 1.5 MeV Confirm for the exact quoted unit
Sensitivity 80 CPM per µSv Confirm for the exact quoted unit
Electric-field range 1 to 1,999 V/m Confirm for the exact quoted unit
Magnetic-field range 0.01 to 99.99 µT Confirm for the exact quoted unit
Display and records 2.4-inch colour screen and up to 50 alarm records Confirm for the exact quoted unit
Battery and size 1500 mAh rechargeable battery; 138 x 63 x 32 mm Confirm for the exact quoted unit
Technical source: GC-03 manufacturer product information. Reviewed on 4 October 2026.
China sourcing and B2B quotation

Tell us your application, quantity and destination.

We will verify the current domestic seller, exact model revision, package, documents, MOQ, lead time and commercial terms before quotation.

Where can the GC-03 be used?

Nuclear radiation awareness

State the radiation type, expected range, operating conditions and required evidence when requesting this configuration.

Electric-field equipment checks

State the radiation type, expected range, operating conditions and required evidence when requesting this configuration.

Magnetic-field spot checks

State the radiation type, expected range, operating conditions and required evidence when requesting this configuration.

Household and environmental screening

State the radiation type, expected range, operating conditions and required evidence when requesting this configuration.

What should buyers verify before ordering?

Exact detector and revision

Confirm the detector tube, hardware revision, firmware, interface language, accessories and package contents. Marketplace listings can combine different revisions under one title.

Measurement task

State the radiation type, expected dose-rate range, units, background, alarm method and operating environment. A portable awareness meter is not automatically suitable for regulated dosimetry.

Calibration and documents

Name the required data sheet, calibration field, standard, issuing laboratory, traceability and report language. No certificate is claimed until the supplier provides it for the quoted unit.

Commercial terms

Confirm sample quantity, MOQ, lead time, packaging, Incoterms, warranty, spare units and after-sales route before payment.

GC-03 buyer questions

Can this model be sourced from China?

Yes. A public manufacturer or Chinese domestic retail route has been identified. The exact seller, model revision, package and availability are checked again before quotation.

Is the GC-03 in stock?

Stock is not claimed on this website. Current availability, quantity and dispatch time are confirmed for each enquiry.

Is calibration documentation included?

Documentation depends on the seller and package. State the required standard, laboratory and destination-market requirements so the correct evidence can be quoted.

Can the model or packaging be customized?

English labels, packaging, accessories and OEM options can be reviewed for qualified quantities. Feasibility, samples and MOQ require supplier confirmation.

Key terms for evaluating this detector

Geiger Muller counter

A gas-filled detector that produces pulses when ionizing radiation interacts with the tube.

Dose rate

Dose rate describes the indicated radiation dose per unit of time, commonly shown in µSv/h.

Accumulated dose

Accumulated dose is the total indicated dose recorded during a monitoring period.

Energy response

Energy response describes how detector sensitivity changes across photon energies.

Calibration evidence

Calibration evidence records how a specific instrument was tested against stated references and conditions.

Compare related radiation detectors

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