Feature:1. 3 in 1 Testing: Comes with 0.01-1000Sv/h wide measuring range of radioactive substances, the Geiger counter can detect hard , and X rays.2. Alarm Function: Supports easy manual setting on the threshold valve, this nuclear radiation detector is equipped with automatic alarm function.3. Better Display: Large HD digital display has low power consumption, together with the accurate counting tube, the testing and reading are easy.4. With ABS Shell: The casing is mainly made of premium ABS material, which is durable with pressure, falling and wearing, offering good protection.5. Flexible Using: Can be widely used in detecting domestic nuclear radiation, industrial nuclear radiation, treatment nuclear radiation and more.Specification:Item Type: Nuclear Radiation DetectorMaterial: ABSPower Supply: 1 x built in 18650 lithium ion battery with 2200mAh capacity. Ray Type: For hard , and X rays. Detector Type: Metal Cover Counter TubeMeasurement Range: 0.01-1000Sv/hEnergy Response: 40KeV-1.5MeVMeasurement Accuracy: Better Than 20%Measurement Unit: Sv/h, mSv/h, mR/h, CPS, Sv, mSv. Alarm Value Function: Alarm threshold can be set. Alarm: Sound, vibration, with independent switch. Accumulated Time: 1-9999 minutes adjustable. Accumulated Dose: Automatic accumulation, can be manually reset. Maximum Hold: Automatically hold the maximum value. Curve Observation: Curve graph of the last hour, and automatic calculation of maximum and average values. Measurement Mode: Fast and smooth modes. Voice: Chinese and English menus. Working Temperature: -20 ~ +60Working Humidity: 5% - 95%RH, non condensing. Charging Time: