Wide detection range: The nuclear radiation detector has a wide range of applications and can detect medical nuclear radiation, industrial nuclear pollution, decoration stone radiation, gamma rays, X-rays, beta rays, base station microwave radiation. Charging is easier: The nuclear radiation detector is small and easy to charge, no AA batteries are needed, but can be charged through a USB cable, which is very convenient nd there is also a 39.4inches USB cable as a bonus. High precision: The dosimeter uses high-precision GM tube as the core sensor, which is safe and convenient, with high sensitivity, and can be detected at any time when it is turned on. Record data more intelligently: The dosimeter can automatically record data so that you can perceive changes in surrounding nuclear radiation Wide Application: Portable Geiger radiation protection and high accuracy and stability of the product, widely used in material testing and radiation testing, very suitable for daily use, hospital, industry, etc. Main Features: 1. Measure real-time dose rate and accumulated dose. 2.Dose rate alarm threshold and dose alarm threshold can be set arbitrarily (continuously adjustable). 3.Either sound alarm mode or flash alarm mode or any combination of them can satisfy various alarm needs. 4.It has alarm prompt function for blocking when the radiation dose rate exceeds 10 mSv / h, (display shows 99.99Sv / h). 5.It has built-in memory, even if the power is off, the accumulated dose value, dose rate alarm threshold and dose alarm threshold data will not get lost. Technical Parameters: 1.Detector: Energy-compensated GM counter tube. 2.Measuring Range: Dose Rate: 00.00Sv/h ~ 10mSv/h. 3.Dose: 00.00Sv ~ 10Sv. 4.Sensitivity:> 1.5 cps / Sv / h (vs. 137Cs). 5.Energy Response: 48keV ~ 3.0MeV. 6.Relative Error: