Features Geiger Tester: The nuclear radiation monitor responds quickly to radiation, and will alarm in time in high risk environments. Smart Testing: Can accurately detect beta, gamma, and X rays, and the accuracy error can be controlled within 3%. Also, the detection value is updated in real time. Broad Utility: Widely used in nuclear power plants, accelerators, steel industry, chemical industry, isotope applications, etc. Clear Display: LCD backlight display enables a clear viewing on the data, which will largely simplify your operation as well. Easy Carrying: Comes with a light weight and a compact size, the simple storage and carrying ensures more convenience. Specification: Item Type: Nuclear Radiation Detector Detection Technology: G M detection technology.  Detection Type: Beta, Gamma, and X ray.  Display Mode: LCD backlight.  Energy Range: 20keV~3.0mev≤±30%(137Cs-).  Sensitivity: 80cpm, uSv, (Co-60).  Test Accuracy: 0.01 μSv/h Real Time Range: 0-99.99 μSv/h Accumulation Range: 0-99.999 mSv Response Time Error: ≤10% Average Error: ≤3% Power Supply Mode: 3 x 1.5V AA battery, delivery without battery.  Battery Time: ≥4 hours Package List: 1 x Nuclear Radiation Detector 1 x User Manual Note: When entering a strong radiation environment, take safety precautions. Package List 1 x Nuclear Radiation Detector 1 x User Manual