Features: This tool is mainly responsible for monitoring the radiation of X, y and hard ? ray in various radioactive work areas, it is featured as swift response and broad measurement scope. With high sensitivity, the instrument can also measure the environment background. Contemporary measurement and display for both of dose rate and accumulated dose. During the battery replacement, the calendar, time and accumulative data can be stored permanently. Triple Alarm: Optional alarm modes including sound, light and vibrations. You can choose the suitable modes according to your needs. Presettable alarm threshold of dose rate and accumulated dose. Wide Application: This detector is widely applied in the individual safety protections monitor and radioactive indication for work personnel in the following fields: nuclear power plant, accelerator, iron and 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. Three models optional: There are PDB-10A, PDB-10B, PDB-10C three different models. The difference between these three types is the relative inherent error and color. The PDB-10A relative inherent error is ?13% (137CS1mSv/h) and blue color, The PDB-10B relative inherent error is ?9% (137CS1mSv/h) and green color, The PDB-10C relative inherent error is ?5% (137CS1mSv/h) and yellow color. Specifications: Material: ABS Type: PDB-10A, PDB-10B, PDB-10C (optional) Radiation Detection: X, gamma and hard beta rays Detector: Geiger counter tube Normal content standard: within 0.5uS V/h Measurement ranges? Dose equivalent rate: 0.01-1000uSV/h (maximum 10mSv/h) Accumulated dose equivalent: 0.01?Sv-500mSv Energy ranges: 50 ke V-1.5 MeV ?+30% (for 137Cs-) Relative inherent error: PDB-10A: ?13%(137CS1mSv/h) PDB-10B: ?9%(137CS1mSv/h) PDB-10C: ?5%(137CS1mSv/h) Sensitivity: 80 CPM/Sw/h(for Co-60) Alarm threshold: Dose rate: arbitrary selection among 0.5,1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0uSv/h Accumulated dose: arbitrary selection among 0.05, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, 100.0mSv Operating environment: temperature -10? ~+45?, relative humility: ?95%(+45?) Battery: 1 * CR1220 (included) Package size: Package weight: 172 * 126 * 36mm / 6.8 * 5.0 * 1.4in Package weight: 200g / 7.1ounce Packing list: 1 * Nuclear Radiation Detector