Specification -Material: ABS -Color: White, Black -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 (Adjustable) -The use of ambient temperature: -25 ~+45 -Relative humidity: less than 95% -Power supply: 3 * AA battery (included) -Item size: 116 * 60 * 35mm -Measuring range: 0.1uSV/h-10mSV/h -Item weight: About 145g / 5.1ounce Function: 1. Nuclear radiation,can detect X, , Ray . 2. Trend graph, Particles sound, Alarm sound, Display sound. 3. Built-in Geiger counter, which is characterized by accurate measurement and high range. 4. Measure the dose rate real-time, and record the cumulative dose at the same time. 5.The dose rate alarm threshold and dose alarm threshold can be continuously adjustable and arbitrarily set. 6. Can view the start date of the current cumulative dose. 7. Have dual alarm functions of dose rate and dose value. 8. With buzzer sound alarm function. 9. When the radiation dose rate exceeds 10mSv/h, it has a blocking warning prompt function (display 999MAX). 10. Built-in memory, the accumulated dose value, dose rate alarm threshold and dose alarm threshold data will not be lost after power off. 11. Continuous monitoring of battery power, Low battery reminder function. 12. With real-time dose rate curve display function. 13. Screen backlight ON/OFF function. 14. Particle sound ON/OFF function. 15.The external Type-C interface can be used for power supply. Packing List: 1 * Geiger Counter 1 * User Manual 1 * USB cable NOTICE: Because of the light irradiation or computer display difference, please understand we can't guarantee photos and real color is 100% same.