Features:  This instrument is mainly used for radiation monitoring of X, γ and β rays.  With detection sensitivity, especially for environmental radioactivity  monitoring to detect traces of nuclear radiation.  Configured LCD colorful screen, 128*64 clear display definition, you can see the real time data clearly.  Equipped with Chinese and English operational interface, you can set parameters, easy and convenient to use.  Real-time measurement and display of dosage equivalent rate and accumulative dosage in the work area.  Permanent data storage upon power cutoff.  Low power consumption and battery under-voltage indication function.  The instrument can preset the alarm value of dosage rate and accumulative dosage.  Three selective alarm modes design: sound, light and vibration.  Measurement units switchable: dosage rate in the unit of u Sv/h, u Gy/h and m R/h.  The calendar, time and accumulative data can be stored permanently during the battery replacement.  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, γ and hard β ray  Detector: Geiger counting tube  Normal background radiation value: below 0.5μ Sv/h.  Measurement scope:  a. Dosage equivalent rate: 0.08-1000 μ Sv/h (maximum:10 mSv/h)  b. Accumulative dosage equivalence: 0.00 μ 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: μ Sv/h, μ 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