Features1、3 in 1 Testing: Comes with 0.01-1000μSv/h wide measuring range of radioactive substances, the Geiger counter can detect hard β, γ 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.SpecificationItem Type: Nuclear Radiation DetectorMaterial: ABSPower Supply: 1 x built in 18650 lithium ion battery with 2200mAh capacity.Ray Type: For hard β, γ and X rays.Detector Type: Metal Cover Counter TubeMeasurement Range: 0.01-1000μSv/hEnergy Response: 40KeV-1.5MeVMeasurement Accuracy: Better Than ± 20%Measurement Unit: μSv/h, mSv/h, mR/h, CPS, μSv, 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℃ ~ +60℃Working Humidity: 5% - 95%RH, non condensing.Charging Time: