Features:  High sensitivity, wide measuring range, has a long service time, you do not need to change it often.  Using of sophisticated G-M tube as the core sensors, the detecting data will be more accurate.  Wide Applications: This tester can be applied to material inspection, environmental test, radiology protection, radiopharmaceutical screening, etc.  Compact and portable, you can put it into your pocket to carry easily.  The operation interface is simple and clear, easy to use, giving you a better experience.    Specifications:  Material: ABS  Color: white, black, yellow (optional)  Detectable species: Beta, Gamma, X-ray  Sensor type: G-M tube  Energy range: 50kev-1.5mev less than 30%  Relative intrinsic error: less than plus or minus 10%  Sensitivity: 80cpm / μSV / Co-60  The maximum dose equivalent rate: 99.99μsv/h  Voice source: real particle sound / alarm sound / mute  Alarm threshold: 0.5/1.0/2.0/5.0  The use of ambient temperature: -25 ~+45℃  Relative humidity: less than 95%  Power supplys: 2 * AA battery (not included) or USB cable (not included)  Item size: 135 * 70 * 38mm / 5.3 * 2.8 * 1.5in  Item weight: 145g / 5.1ounce  Package size: 150 * 80 * 50mm / 5.9 * 3.1 * 2.0in  Package weight: 160g / 5.6ounce    Packing List:  1 * Nuclear Radiation Detector