Feature: 1. High Sensitivity: The nuclear radiation detector uses a Geiger tube sensor, which enhances the sensitivity of detecting radioactive radiation and makes the detection more accurate. 2. Real Time Monitoring: Geiger counter radiation detector uses real time monitoring, focusing on radiation radiation detection. 3. LCD Display: The Giegermeter radiation detector uses a large LCD screen to display the test results at a glance and the display is clearer. 4. Easy to Use: Radiation detector can be started with one key, and it can be tested immediately after power on, no calibration required, and it is very convenient to use. 5. Wide Application: Radiation tester is suitable for radioactive materials, ore, marble and other decoration stones, radiology equipment, security inspection and quarantine facilities. Specification: Item Type: Nuclear Radiation Detector Material: ABS Detection Rays: X, R, Hard Beta Rays Detector: Energy Compensation GM Tube (Geiger Counter Tube) Measuring Range Dose Rate: 0.01—1000 μSv/h (maximum: 10 mSv/h) Energy Range: 50 KeV—1.5 MeV ≤ ± 30 % (Take 137 Cs I As an Example) Relative Congenital Error: ≤±15% (137 Cs 1 mSv/h) Flexibility: 80 CPM/μSv/h (for Co 60) Alarm Threshold: Dose Rate: Selectable from 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0 μSv/h. Dose Rate Unit: μSv/h Metering Display: Display the Dose Rate Per Second; the Protection Alarm Response is Less Than 5 Seconds. Use Environment: Temperature: - 10℃ — + 45℃ Relative Humidity: ≤ 95 % (+ 45℃) Battery Model:2 x AA Battery (Not Included). Package List: 1 x Nuclear Radiation Detector 1 x User Manual Note: Ships without battery.