Dose rate alarm unit GRAETZ GammaSmart two

The GRAETZ GammaSmart Two portable dose rate alarmunit is specially designed for personal radiation protection when handling ionizing radiation. The rugged and battery-powered measuring device even fits comfortably in jacket or trouser pockets in its compact form.

Product Highlights

Dose rate alarm unit GRAETZ GammaSmart two

Robust and compact aluminum housing

Fits in jacket or pants pocket or can be attached with the integrated clip

Clear visual and audible warnings when a dose rate warning threshold is exceeded.

Dust and splash water protection (protection class IP54)

Also available as special version for the field of non-destructive testing (NDT)

  • The GammaSmart two device is a very robust, pocket-sized, battery-operated dose rate warning device for personal radiation protection
  • It detects gamma and X-ray radiation and reports these with clear optical and acoustic single pulses, which increase in the pulse sequence as the dose rate increases
  • The splash-proof aluminum housing (IP54) provides shielding against electromagnetic influence, an optical battery control indicates the operational readiness of the device
  • A plastic clip is used to attach the dose rate warner to clothing


  • GammaSmart two V40 with a dose rate warning threshold at 40 µSv/h for use in non-destructive testing (NDT) radiographic testing. For mobile handling, the local dose rate must not exceed 40 µSv/h.
Max. permissible dose rate 1 Sv/h
Sensitivity approx. 6 imp/min at 3 µSv/h
Energy sector approx. 35 keV – 1.3 MeV
Dose rate warning thresholds optional 1, 40 µSv/h for version V40
Dimensions approx. 59 × 71 × 30/17 mm
Weight (incl. batteries) approx. 90 g
Protection class IP54 (Protected against splashing water)

For detailed technical data, please refer to our product data sheet for this article. Click here to download.

Application areas

Dose rate alarm unit GRAETZ GammaSmart two





Research & Education


Dose rate alarm unit GRAETZ GammaSmart two

Technical data sheet

Download the technical data sheet for this product in PDF format now.

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Dose rate alarm unit GRAETZ GammaSmart two

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