Feature:1. [Double Metering] Radiation detector has a dual metering function, the current content and the accumulated content (you can view the current content and the amount of radiation received for a long time).2. [Alarm Threshold] Electromagnetic Radiation Detector has 6 alarm thresholds, which can be arbitrarily selected from 0.25, 0.5, 1, 2.5, 5.0, and 10.0uSVh. If the set value is exceeded, it will alarm.3. [Multi Applications] Nuclear radiation tester has a wide range of applications, which can be used for stone detection, hospital CT, MR detection, airplane high altitude detection, security inspection.4. [Power Off Memory] Handheld body nuclear radiation detector has a power off memory function, the instrument has high sensitivity, data is not lost, and can detect γ, X and hard β rays.5. [6 Detection Units And Long Battery Life] Nuclear radiation detector has 6 built in detection units, uSv/h, mSy/h, Sv/h, uSv, mSv, Sv, with a long battery life and a battery life of more than 20 days when fully charged.Specification:Item Type: Nuclear Radiation DetectorMaterial: ABSProduct Size: Approx. 105 x 58 x 26mm / 4.1 x 2.3 x 1inColor: SilverWeight: Approx. 228g/8.0ozDetection Rays: γ、X and Hard β RaysDose Rate Units: uSv/h, uGy/h, mR/hMeasurement Range: 0.01uSv/h-10mSv/h (Dose Rate); 0.01uSv-999.99Sv (Cumulative Dose)Energy Range: 40keV-3MeVRelative Error: ≤±15% (137CS1mSv/h)Detector: Energy Compensation GM DetectorPower Supply Mode: Lithium Ion Battery (Included)Battery Capacity: 1000mAhOperating Temperature: -40℃~+50℃Relative Humidity: ≤90%Alarm Mode: Sound, LightScope of Application: Medical Environment, Factory Environment, Hospital Testing, Home Improvement Stone, etcHow to Use:Up button function, long press to switch the machine; when in the real time dose rate measurement interface, short press the up button, the cumulative dose starts to