A cheap counter with a wide listed range for an emergency drawer. Its low sensitivity makes it a poor choice for checking samples.
Amazon $64.99
A cheap, easy-to-read beta-gamma counter with a big screen and a lot of memory. Good for a first counter at home.
- GM tubeDetector
- β γ XDetects
- 132 CPM per µSv/h (Co-60)Sensitivity
- 2,000 µSv/hMax dose rate
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
- Large color screen is easy to read at a glance
- Logs to 2 MB of memory and charges over USB-C
- Takes a standard replaceable 14500 cell
- No Wi-Fi, unlike the GMC-500
- Warranty term not published
- Gamma and beta only
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its detector type. How we rank explains each one.
Specifications
| Model number | GMC-800 |
|---|---|
| Detection | |
| Detector | GM tube |
| Radiation types | β γ X |
| Sensitivity | 132 CPM per µSv/h (Co-60) |
| Max dose rate | 2,000 µSv/h |
| Energy range | 100 to 3,000 keV |
| Gamma spectrum | No |
| Features | |
| Data logging | Yes |
| Connection | None |
| Battery | 3.7 V 14500 Li-ion, replaceable, or USB power |
Alternatives in this detector type
A cheap pocket Geiger counter for a curious first look at background radiation. Serious users will want more sensitivity and logging.
Amazon $51.29A basic, cheap beta-gamma counter for checking background levels and hobby samples. Buy it to learn, not for emergencies.
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