# Geigex Gi-01 Personal Radiation Dosimeter

> A pocket-sized scintillation dosimeter that shows gamma and X-ray dose rate in real time. Price: US$399.

## Key facts
- Measures: Gamma and X-ray radiation
- Dose-rate range: 0.01 µSv/h to 10 mSv/h
- Sensor: Solid-state scintillator (SSM-P2)
- Display: Live dose rate, accumulated dose, date and time
- Alarm: User-set threshold, 60 dB at 10 cm
- Battery: About 500 hours on 2 × AAA
- Size & weight: 53.5 × 44.3 × 21.3 mm, 60 g
- Warranty: 12 months, plus 14-day returns
- Price: US$399. Shipping: US$19.99 outside Australia; A$9.95 within Australia.
- Warranty: 12 months. Returns: 14-day change-of-mind, plus Australian Consumer Law rights.

## Specifications
- Radiation types measured: Gamma, X-ray
- Not measured: Alpha and beta radiation; not for testing food or drink
- Dose-rate range: 0.01 µSv/h – 10 mSv/h
- Minimum measurable value: 0.09 µSv/h
- Display resolution: 0.001 µSv/h
- Accumulated dose range: 0.001 µSv – 999 Sv
- Sensor: Solid-state scintillator, SSM-P2
- Display: LCD: dose rate, accumulated dose, date and time
- Alarm: User-set dose-rate threshold; 60 dB at 10 cm; volume adjustable
- Connectivity: Near Field Communication (NFC)
- Power: 2 × AAA batteries (included)
- Battery life: About 500 hours; about 30 days in power-saver mode
- Dimensions: 53.5 × 44.3 × 21.3 mm (2.1 × 1.74 × 0.84 in)
- Weight: 60 g (2.1 oz)
- Operating environment: 0–40 °C, 20–90 % relative humidity
- Warranty: 12 months

## In the box
- Geigex Gi-01 dosimeter
- 2 × AAA batteries
- Protective silicone case and metal clip
- User manual

## FAQ
### What does the Geigex Gi-01 measure?
The Gi-01 measures gamma and X-ray radiation. It shows the live dose rate in µSv/h and your accumulated dose. It does not measure alpha or beta radiation.

### Is a dosimeter the same as a Geiger counter?
Both measure radiation, but they use different sensors. A Geiger counter uses a gas-filled Geiger–Müller tube. The Gi-01 uses a solid-state scintillator, which is denser, so the device can be smaller and respond quickly. The Gi-01 also keeps a running total of your dose, which is what makes it a dosimeter.

### Can I take a radiation dosimeter on a plane?
Yes. The Gi-01 runs on two standard AAA batteries and is allowed on flights. The alarm volume can be adjusted.

### What reading is normal?
It depends on where you are. ARPANSA puts Australia’s average natural background at about 1.7 mSv a year, and worldwide natural exposure ranges from about 1 to 13 mSv a year. The Gi-01 reads the external gamma part of that, so typical readings at ground level are a small fraction of a µSv/h.

### Why is my reading higher than expected?
Readings rise near radioactive material, in areas with naturally radioactive rocks or soil, at high altitude, and especially when flying, because the thinner atmosphere screens out less cosmic radiation.

### Can it test food or drink?
No. The Gi-01 measures radiation in the air around you. It cannot measure radioactivity in food or water.

### Does it detect radon?
Not directly. Radon is a gas that mainly emits alpha particles, which the Gi-01 does not measure. Use a dedicated radon detector for that.

### Does it replace a workplace dosimetry badge?
No. If your employer requires a personal monitoring badge (TLD or OSL), keep wearing it. The Gi-01 gives you live readings between badge reports.

### How long do the batteries last?
About 500 hours on two AAA batteries, or about 30 days in power-saver mode.

### How big is it?
53.5 × 44.3 × 21.3 mm and 60 g — about half the size of a credit card.

### How much is shipping?
US$19.99 to addresses outside Australia, and A$9.95 within Australia.

### What is the warranty and returns policy?
12 months warranty and 14-day change-of-mind returns, in addition to your rights under Australian Consumer Law.

## Links
- [Product page](https://geigex.com/)
- [Specifications](https://geigex.com/#specs)
- [FAQ](https://geigex.com/#faq)
- [Shipping](https://geigex.com/shipping)
- [Returns](https://geigex.com/returns)
- [Warranty](https://geigex.com/warranty)
- Contact: support@geigex.com