This product is one small type high sensitivity radiation dosage alarm device, mainly used to monitor the X, and hard rays. It has the characteristics such as high sensitivity and accurate measurement. Widely applied in the environment where existing ionize radiation environment, human body accepted radiation dosage supervise and protection, such as family decoration, radiation shining manufacture enterprises, hygiene, nuclear lab, nuclear station, building materials, petroleum chemical, geology general investigation, used steels, industry flaw detection and others. Specifications: Name: Nuclear Radiation Detector Color: Black Material: ABS Battery: 2 * AAA battery (not included) Resolution: 128*64 Ray Detection: X, , hard rays Energy Ranges: 50keV-1.5MeV30% (for 137Cs-) Normal Amount: within 0.5sv/h Relative Inherent Error: 8% (137CS1mSv/h) Detector: Energy Compensation G-M Tube (Geiger Counter) Sensitivity: 80CPM/Sv/h (for Co-60) Unit: Sv/h, Gy/h, mR/h Measuring Ranges: Dose Equivalent Rate (DER): 0.08-1000Sv/h (Max. 10mSv/h) Cumulative Dose Equivalent Rate: 0.00Sv-500.0mSv Alarm Setting: Dose Equivalent Rate (DER): Select from 0.5, 1.0, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0 Sv/h Cumulative Dose Equivalent Rate: Select from 0.05, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, 100.0 sSv Operating Environment: -10 to 45, 95% RH (45) Item size: 102 * 69 * 26mm / 4.02 * 2.72 * 1.02in Package size: 130 * 100 * 40mm / 5.12 * 3.94 * 1.57in Package weight: 180g / 6.35ounce Packing List: 1 * Nuclear Radiation Detector