The Fnirsi GC-01 is a portable dosimeter and radiation meter with a Geiger-Muller tube that detects beta, gamma and X-ray radiation. It shows the current background over 0.00–1000 µSv/h and the accumulated dose up to 500 mSv, and warns with sound and vibration. It runs on a built-in 1200 mAh battery and measures 120 × 78 × 27 mm.
Specifications
| Parameter | Value |
|---|---|
| Model | GC-01 |
| Radiation types | X-ray, beta, gamma |
| Measuring range | 0.00 – 1000 µSv/h |
| Accumulated dose | up to 500 mSv |
| Detector | Geiger-Muller gas-discharge tube |
| Sensitivity | 80 cpm/µSv (for Co-60) |
| Energy range | 48 keV – 1.5 MeV |
| Units | µSv, µGy, mrad, cpm, cps |
| Built-in battery | 1200 mAh |
| Alerts | sound + vibration |
| Dimensions | 120 × 78 × 27 mm |
| Interface language | Ukrainian / English |
| Displays | current background level and accumulated dose |
What you get
- Real Geiger-Muller tube — detects beta, gamma and X-ray radiation.
- Two readings at once — live background plus accumulated dose up to 500 mSv.
- Wide scale — 0.00–1000 µSv/h dose rate.
- Hard-to-miss alerts — sound and vibration together.
- Rechargeable — built-in 1200 mAh battery, no disposable cells.
- Your choice of units — µSv, µGy, mrad, cpm or cps.
Who it is for
Home buyers, builders and renovators who want to check granite, ceramics or stone; owners of country houses and land; site workers; lab staff and people doing field work.
Who it is not for
Alpha radiation is not among the listed detectable types. If you need an official measurement report for paperwork, a consumer dosimeter will not replace one.
Uses
Measuring background radiation at home, in a country house or indoors; checking building materials such as granite, ceramics and stone; monitoring construction sites and land; lab and field use.
In the box
Fnirsi GC-01 dosimeter and a user manual in English.
Questions and answers
Which radiation types does the GC-01 detect?
Beta, gamma and X-ray radiation in the 48 keV – 1.5 MeV energy range.
What is accumulated dose?
The total dose recorded while the meter has been running; the GC-01 tracks it up to 500 mSv alongside the live background.
Does it need batteries?
No, it runs on a built-in 1200 mAh rechargeable battery.
How will I know the level is too high?
The meter sounds an alarm and vibrates, so the warning is noticeable even in a pocket.
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