Feature:1. [Accurate Measurement] Equipped with a 90 meter Geiger counter tube, provides precise measurement of radiation dose rates ranging from 0.08Sv/h to 9999Sv/h.2. [Smart Alarm System] The Geiger counter features an intelligent alarm that emits sound and flashes a red warning when the detected radiation dose exceeds the threshold.3. [Portable and Convenient] The compact size of the radiation detector makes it easy to carry and store, takes up small space, convenient to use.4. [Long Battery Life] Powered by a 400mAh lithium ion battery, this radiation detector ensures an extended battery life, allowing for continuous monitoring in various environments.5. [Wide Applications] Suitable for various applications including nuclear waste testing, industrial radiation monitoring, medical radiation detection, and assessing radiation in seafood and food.Specification:Item Type: Nuclear Radiation DetectorMaterial: ABSModel: G3Power Supply: 1 x Lithium Ion Battery 400mAh (Built in)Detector: 90m Geiger Counter TubeMeasurement Range: Dose Rate: 0.08Sv/h to 9999Sv/hResponse Time: Response Within 10 Seconds, Stable Within 2 MinutesRefresh Rate: 1 Time Per SecondResolution: 0.01Sv/hOperating Environment: -10 to 50; Humidity 95%RH Non CondensingAverage annual selective dose for 5 consecutive yearsEffective dose for any yearAnnual equivalent dose of intraocular lensAnnual equivalent dose of limbs (hands and feet) or skinDose restrictions for personnel in the radiation industry 20mSV 50mSV 150mSV 500mSVDose limits for public members 1mSV 5mSV 15mSV 50mSV.Package List:1 x Nuclear Radiation Detector1 x Charging Cable1 x User Manual