Geiger counter with built-in sensors, fast response and high accurate. measure range: 0.05uSv-50mSv,Measure precision:3%. Temperature range: 0-40, humidity range: 20%RH~80RH%. Built-in 2000 mAh rechargeable battery that last This radiation dosimeter test temperature and humidity. Support real-time data view for real-time detection,converting the data collected over a period of time into average data graphs the option of alarm setting to set the alarm value of dosage rate.When the radiation value exceeds the set value, the nuclear radiation dosimeter will alarm automatically with loud audible alert. If you 't like the sound of alarm, you can set the dosimeter to turn off Real-time measure and average measure, easy to operate.The real time value and average value can be displayed on the display, easy to read. The Alarm responding time td: Less than 10s. Fast response time and wide measurement range Widely applied in the environment where existing ionize radiation. Such as radiation, geological survey, iron, Inspection vehicles, nuclear power plants, industry, radiology, radiology laboratories,seafood, outdoor health sports activities and so on color:Black Material:ABS size:160 x 70 x 50mm Package Contents: 1 x radiation detector 1 x usb cable 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.