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. Features: Multifunctional design, this instrument is mainly used for radiation monitoring of X, ? and hard ? rays. Adopts Geiger counter sensors and 64bit control chip, with detection sensitivity, especially for environmental radioactivity monitoring to detect traces of nuclear radiation. Configured LCD colorful screen, 128*64 resolution, clear display definition, you can see the real time data clearly. Real-time measurement and display of dosage equivalent rate and accumulative dosage in the work area. The instrument can preset the alarm value of dosage rate and accumulative dosage. Three selective alarm modes design: sound alarm, light alarm and vibrate alarm. There are 3 measurement units switchable: dosage rate in the unit of ?Sv/h, ?Gy/h and m R/h, easy to adjust according to your using habit. Low power consumption and battery under-voltage indication function, permanent data storage upon power cutoff. 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-1.5MeV?30% (for 137Cs-) Normal Amount: within 0.5?sv/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): 0.08-1000?Sv/h (Max. 10mSv/h) Cumulative Dose Equivalent Rate: 0.00?Sv-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