Radiacode 103
The Radiacode for people who mainly want isotope identification in a pocket size. If you just want dose readings, the 102 is enough.
Amazon $319$319
Scintillator1,800 CPM/µSv/h1,000 µSv/h
2.7/5
A set-and-forget home radiation monitor with a long battery life and a tidy app. It is not a tool for checking samples.
- Solid-state sensorDetector
- β γ XDetects
- 1,000 µSv/hMax dose rate
Check price at Amazon$139
Price checked November 8, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Runs a year or more on two AA batteries
- E-ink display and Bluetooth app history suit a shelf monitor
- Light at 107 g
Cons
- Sensitivity not published, so it scores lowest on that factor
- Warranty term not published
- Slow to settle at background levels
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 | TDSNUCH1 |
|---|---|
| Detection | |
| Detector | Solid-state sensor |
| Tube or crystal | PIN diode |
| Radiation types | β γ X |
| Max dose rate | 1,000 µSv/h |
| Energy range | 80 to 1,500 keV |
| Gamma spectrum | No |
| Features | |
| Data logging | Yes |
| Connection | Bluetooth |
| Battery | 2 x AA |
| Build | |
| Weight | 107 g |
| Ingress rating | IP20 |
Alternatives in this detector type
Radiacode Zero
A sensitive pocket dosimeter that still works in a real emergency. Choose it over a spectrometer if dose readings matter more than isotope identification.
Amazon $299$299
Scintillator960 CPM/µSv/h9,000,000 µSv/h
AKSTEST HFS-50-CsI
A low-cost scintillation dosimeter for general monitoring. Too little is published to rank it with the Radiacodes.
Amazon $149.99$149.99
Scintillator20,000 µSv/h
Compare
Compare the Aranet Radiation with any other geiger counter →
More from Aranet: every Aranet product ranked.