Feature 1GM Counting Tube: Using GM count tube, could detect X, , and rays, with wide measurement range of 0.05USV to 50MSV and high sensitivity. Configure with TFT 2.0 color screen, value display is intuitive and clear. 2Good Functionality: Could measure the dose rate in real time, record cumulative dosage, and check the start time of the current dose accumulation, with calibration function. 3Sound and Light Alarm: Featuring over dose alarm function, sound and flashing can be freely combined, the alarm threshold can be set freely, continuously adjustable. 4Multi Function: With timing measurement function, can be set freely within 000 to 999 hours. Could save historical record information of the last 10 measured. Chinese and English menu can be freely switched. 5Widely Used: This meter is widely used for existing ionizing radiation environment and environment of human body receiving radiation dose supervision and protection, such as home improvement, laboratory.Item Type: NuclearRadiationDetectorMaterial: ABSBattery: 1 x 103450 lithium battery (built in)Battery Capacity: 1800mAhDetection Range: 0.05uSv to 50mSvWorking Environment: Temperature -20 to 50, humidity <95%RH no condensationCharging Interface: Type C interface (green light is always on during charging, off when full charged)Alarm Response Time: <10sAlarm Threshold Deviation: -17% to +25% . Package List1 x NuclearRadiationDetector1 x Charging Cable1 x Storage Bag1 x Lanyard1 x Manual