The device won't power on.

1.Press the power button briefly, avoid long presses. 2.Use the reset button at the device's bottom. 3.Connect to a computer for firmware update.

Readings are inaccurate.

1.Ensure the unit is set to μSv/h, the standard for normal areas. 2.Charge the device if the battery voltage is low. 3.Keep away from strong electromagnetic devices during measurement.

The device fails to detect radiation.

Conduct a function test: hold a test source close to the detector and check if the reading increases. Update the firmware if software freeze causes data lock.

How do I switch languages?

Long-press the right button to enter settings, navigate to "Language" with the down button, select English, and confirm with the OK button.

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FNIRSI Geiger Counter Nuclear Radiation Detector - Radiation Dosimeter with LCD Display, Portable Handheld Beta Gamma X-ray Rechargeable Radiation Monitor Meter, 5 Dosage Units Switched

FNIRSI Geiger Counter Nuclear Radiation Detector - Radiation Dosimeter with LCD Display, Portable Handheld Beta Gamma X-ray Rechargeable Radiation Monitor Meter, 5 Dosage Units Switched

Product ID: 500238286

Details

Brand
FNIRSI
Item dimensions L x W x H
12.7 x 5.1 x
Item weight
200 Grams
Material
Iron
Style
Compact

📊Detects Gamma, Beta & X-rays

🔋Rechargeable battery-powered

⚠️3-mode smart alarm system

Description

⚡ Stay ahead of invisible threats with FNIRSI’s cutting-edge radiation guardian!

VERSATILE DOSAGE UNITS - Switch effortlessly between 5 dosage units to match your specific measurement needs and industry standards.
PORTABLE USER FRIENDLY - Compact handheld design with easy one-handed operation and multilingual support (English/Chinese) for on-the-go professionals.
CUSTOMIZABLE SMART ALERTS - Set your preferred dose thresholds with light, vibration, and sound alarms to stay instantly informed, even in sleep mode.
BROAD APPLICATION SPECTRUM - Ideal for home safety, industrial inspections, radiology labs, and environmental surveys—because your peace of mind deserves professional-grade tools.
PRECISION RADIATION DETECTION - Built-in GM sensor captures Gamma, Beta, and X-ray radiation with a wide energy range (48 KeV-1.5 MeV) for reliable safety monitoring.

The FNIRSI GC-01 Geiger Counter is a compact, rechargeable radiation detector equipped with a built-in GM sensor that accurately measures Gamma, Beta, and X-ray radiation across a broad energy range. Featuring customizable alarms with light, vibration, and sound modes, it ensures real-time alerts for radiation exposure. Designed for professionals and safety-conscious users, it supports multiple dosage units and languages, making it perfect for diverse environments from home safety to industrial and medical applications.

Specifications

ASIN	B0BHH9X1WG
Best Sellers Rank	335,085 in DIY & Tools ( See Top 100 in DIY & Tools ) 794 in Multi Testers
Brand	FNIRSI
Customer Reviews	4.2 4.2 out of 5 stars (1,346)
Included Components	Nuclear radiation detector
Item Dimensions	12.7 x 5.1 x 2.5 centimetres
Item Weight	200 Grams
Manufacturer	FNIRSI-GC-01
Manufacturer Part Number	GC-01
Material	Iron
Measurement Accuracy	±30%
Model Number	GC-01
Number of Items	1
Output Type	digital
Specific Uses For Product	home improvement, geological survey, automotive, nuclear power, industry, medical
Style Name	Compact
Unit Count	1.0 count

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