Features Three alarm modes: there are three alarm modes: sound, light and vibration, which can remind you better and bring you a better experience. CLEAR DISPLAY - With the liquid crystal display, the working status of the nuclear radiometer is clear on the screen, and you can quickly and accurately read the data you need. HIGH SENSITIVITY Adopts imported sensor processor with high sensitivity, high accuracy and fast response speed. Fast measurement: real-time detection, fast measurement, real-time update of accumulated dose, simple and intuitive. Data Storage Function - With the function of automatic data storage, even if the power is suddenly cut off, the data will not be lost and can be stored for a long time. Specifications: Material: ABS Model: NR-750/NR-850/NR-950 (optional) Detection rays: X, Y and hard beta rays Equivalent dose rate: 0.01~1000μSv/h (maximum 10mSv/h) Cumulative equivalent dose: 0.01 μSv~500.0 mSv Energy response: 48KeV~1.5MeV≤±30% (for 137CS-) Relative inherent error: NR-750≤±15%(137CS1mSv/h) NR-850≤±10%(137CS1mSv/h) NR-950≤±3%(137CS1mSv/h) Language: English, Chinese Sensitivity: 80CPM/uSv (for Co-60) Alarm threshold: Dose rate: can be arbitrarily selected from 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0μSv/h Cumulative dose: can be selected at 0.05, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, 100.0 mSv Power supply: 2 x AA batteries (not included). Packing size: about 172*126*36mm/6.8*5.0*1.4inch Package weight: about 200g Features: It adopts imported sensor processor with high sensitivity, high accuracy and fast response rate. Using the liquid crystal display, the working status of the nuclear radiometer is clear on the screen, and you can quickly and accurately read the data you need. Real-time detection, fast measurement, real-time update of accumulated dose, simple and intuitive. With the function of automatic data storage, even if the power is suddenly cut off, the data will not be lost and can be stored for a long time. There are three alarm modes: sound, light and vibration, which can remind you better and bring you a better experience. Portable handheld design, easy to carry and store, you can try anywhere. Packing list: 1 x nuclear radiation detector. 1 x manual Package List