• Radiation detected: gamma and X-ray from 48 keV to 3 MeV • Detector: energy compensated GM tube compliant to H*(10) • Dose rate measurement range: from 0.01 μSv/h to 100 mSv/h or from 1 μrem/h to 10 rem/h • Dose rate linearity: ± 10 % ±1 digit within the range of 0.1 μSv/h to 100 mSv/h or 10 μrem/h to 10 rem/h • Calibration accuracy: ± 5 % of the reading in 137Cs exposure, at 3 mSv/h, +20°C (68°F) • Energy response: ± 30 % over the range of 48 keV - 3 MeV • Angular response: ± 25 % within ± 45 % from the calibration direction at 48 keV • Dose measurement range: from 0.01 μSv to 1 Sv or from 1 μrem to 100 rem