Features High Accuracy and Sensitivity: The detector is used for measuring β γ and X ray radiation, which is most suitable for measuring small changes in radiation level, and is highly sensitive to the most commonly used nuclides. Rapid Response: The monitor responds quickly to radiation and gives an alarm in a high risk environment in a timely manner, which has high flexibility to measure the environmental background and update the detected values in real time. Intuitive Display: Geiger counter has a large color display screen, which is more intuitive and convenient when viewing data, allowing you to easily and quickly read real time values. And the buttons are easy to use. Portable Size: This tool is compact and very convenient for daily use, you can carry it in the tool bag without taking up too much storage space. Wide Application: This tester can detect electromagnetic radiation and nuclear radiation, meet the needs of family life detection, substation detection, mobile iron tower detection, etc. Specification: Item Type: Nuclear Radiation Detector Material: ABS Model: XR1 Detection Technology: GM detection technology Test Type: β, γ, X ray Display Mode: LCD, backlit Energy Range: 20kev-3.2mev ≤±30% (137Cs-) Sensitivity: 80cpm/μSv/(Co-60)  Test Accuracy: 0.01μSv/h  Real Time Range: 0-99.99μSv/h  Cumulative Range: 0-99.999mSv/h Real Time Error: ≤10% Mean Value Error: ≤3% Power Supply Mode: 3 x 1.5V AAA dry batteries (shipped without batteries) Battery Duration: ≥4 hours Size: Approx. 105x70x30mm/4.1x2.8x1.2in Wide Application: It can detect electromagnetic radiation and nuclear radiation, which can meet the needs of family life detection, substation detection, mobile iron tower detection, etc., can also be applied to material detection, environmental detection, radiation protection, radioactive medical screening, etc. Package List: 1 x Nuclear Radiation Detector Package List 1 x Nuclear Radiation Detector