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: 528616815

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

📏5 dosage units switchable

🔋Rechargeable battery powered

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VT55705

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Description

⚡ Stay ahead of invisible threats with FNIRSI’s smart radiation watchdog!

VERSATILE APPLICATION - Ideal for home, industrial, geological, and radiology environments—empower your safety with professional-grade monitoring.
SMART MULTI MODE ALARM - Customizable light, vibration, and sound alerts keep you instantly informed of radiation spikes—never miss a critical warning.
USER FRIENDLY INTERFACE - Intuitive LCD display with easy one-handed operation and multilingual support (English/Chinese) for seamless usability.
PORTABLE COMPACT DESIGN - Lightweight 200g handheld device fits perfectly in your toolkit or pocket for on-the-go environmental safety checks.
PRECISION RADIATION DETECTION - Built-in GM sensor measures Gamma, Beta, and X-rays with energy range 48 KeV-1.5 MeV for reliable safety insights.

The FNIRSI GC-01 is a compact, rechargeable Geiger counter designed for precise detection of Gamma, Beta, and X-ray radiation. Featuring a built-in GM sensor, customizable multi-mode alarms, and a user-friendly LCD interface, it supports five dosage units and multilingual settings. Lightweight and portable, it’s perfect for professionals and safety-conscious individuals monitoring radiation in diverse environments.

Specifications

ASIN	B0BHH9X1WG
Brand Name	FNIRSI
Customer Reviews	4.2 4.2 out of 5 stars (1,324)
Included Components	Nuclear radiation detector
Item Dimensions	12.7 x 5.1 x 2.5 centimeters
Item Weight	200 Grams
Manufacturer	FNIRSI-GC-01
Material Type	Iron
Model	GC-01
Output Type	digital
Part Number	GC-01
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	home improvement, geological survey, automotive, nuclear power plants, industry, medical, radiology laboratories
Style Name	Compact
Unit Count	1 Count

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