This radiation individual alarm device is collocated with highly flexible Geiger counting tube as detector; it is mainly responsible for monitoring the radiation of X, and hard rays in various radioactive work areas. It is featured as swift response and broad measurement scope. Wide applications, it is widely applied in the individual safety protections monitor and radioactive indication for work personnel in the following fields: nuclear power plant, accelerator, iron steel industry, chemical industry, isotope application, industrial X and y non-destructive flaw detection, Y radiation, radioactive laboratory and surrounding environment monitor of nuclear facilities. Specifications: Name: Nuclear Radiation Detector Material: plastics Battery: 4 * AAA battery (not included) Detection rays: X, and hard ray Detector: Geiger counting tube Normal background radiation value: below 0.5 Sv/h. Measurement scope: a. Dosage equivalent rate: 0.08-1000 Sv/h (maximum:10 mSv/h) b. Accumulative dosage equivalence: 0.00 Sv500.0mSv Energy scope: 50 keV-1.5 MeV 30 % (as for 137Cs-) Relative innate error: 10 % (137 CS 1 mSv/h) Flexibility: 80 CPM/u Sv/h (as for Co-60) Units of dosage rate: Sv/h, Gy/h, m R/h Item size: 120 * 70 * 25mm / 4.72 * 2.76 * 0.98in Item weight: 113g / 3.99ounce Package size: 130 * 100 * 40mm / 5.12 * 3.94 * 1.57in Package weight: 180g / 6.35ounce Packing List: 1 * Nuclear Radiation Detector 1 * Buckle 1 * Guideline 1 * Storage Bag