Features This Geiger counter radiation detector detects beta, gamma and X-rays almost instantly to give you the most accurate information at high speed. Daily use of radioactive radiation detectors helps to avoid radiation hazards in daily life. Using a sophisticated G-M tube as a core sensor. Can be used for material inspection, environmental testing, radiation protection, radiopharmaceutical screening, etc. Compact and portable, the user interface is simple and clear, easy to use. High sensitivity, large measuring range, long service life. Specification: Item Type:Nuclear Radiation Detector Material: ABS Colour: white, black (optional). Size: approx. 135 x 70 x 40 mm / 5.3 x 2.8 x 1.6 inches. Weight: approx. 163 g / 5.7 oz. Detectable types: β, γ, X-ray Sensor type: G-M tube Energy range: 20 kev~3.0 mevs ≤±30% (137 Cs-). Relative intrinsic error: ±10%. Sensitivity: 80 cpm/μSV/Co-60 The maximum dose equivalent rate: 99.99 μV/h. Ambient temperature: -25 ~ +45 °C. Relative humidity: ≤95% (+45°C). Power supply: 2 x AA battery (not included) or USB cable (not included). Voice source: real particle sound/alarm sound/mute Alarm threshold: 0.5/1.0/2.0/5.0. Power Consumption: 0.15W Package list: 1 x nuclear radiation detector. 1 x user manual. Tips: 1. Please allow 1-2 cm error due to manual measurement. Thank you for your understanding. 2. Monitors are calibrated differently, the colour of the item shown in the photos may differ slightly from the actual object. Please take the real one as standard. 3. Please note that the new type and old type of this product are sent at random, and make sure you do not mind before ordering. Package List 1 x Nuclear Radiation Detector 1 x Instruction Manual