Features Premium material - The detector uses an imported sensor processor with high sensitivity, high accuracy and fast response speeds. Real-time detection - Real-time detection, quick measurement, real-time update of accumulated dose, simple and intuitive. Clear display - With the liquid crystal display, the working status of the nuclear radiometer is clearly visible on the screen, and you can read the required data quickly and accurately. Three alarm modes - There are three alarm modes: sound, light and vibration, which can remind you better and give you a better experience. Compact and portable design - Portable design, easy to carry and store, you can test anywhere. Specifications: Material: ABS Model: NR-750/NR-850/NR-950 (optional). Detection beams: X, Y and hard beta rays. Equivalent dose rate: 0.01~1000μSv/h (maximum 10mSv/h). Cumulative equivalent dose: 0.01μSv~500.0mSv 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 selected between 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0 μSv/h. Cumulative dose: selectable to 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). Package size: approx. 172*126*36mm/6.8*5.0*1.4in Package weight: approx. 200 g. Box contents: 1 x nuclear radiation detector. 1 x manual Package List