The natural environment in which we live has a certain amount of radiation, real-time data will fluctuate within a certain range, and the daily use of nuclear radiation detector helps to avoid radiation hazards in . High sensitivity, wide measuring range, has a long service life. Using of sophisticated G-M tube as the core sensor. Can be applied to material inspection, environmental test, radiology protection, radiopharmaceutical screening, etc. Compact and portable, the operation interface is simple and clear, easy to use. Detectable species:Beta, Gamma, X-ray Sensor type:G-M tube Energy range:50kev-1.5mev less than 30% Relative intrinsic error:less than plus or minus 10% Sensitivity:80cpm/SV/Co-60 The maximum dose equivalent rate:99.99sv/h Voice source:real particle sound / alarm sound / mute Alarm threshold:0.5 (Not Adjustable) The use of ambient temperature:-25-+45 Relative humidity:less than 95% Power Supply:2 x AA batteries(Not included batteries) Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:Black Material:ABS Package Contents: 1 * Radiation Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.