Features:The dosimeter uses a Geiger-Mller counter tube to measure radiation. When each passes through the tube and causes ionization, the tube generates a detection current . Each is detected by the tube circuit and recorded as a count , the display value of the dosimeter is the count value in the mode you selected.Due to the random nature of radioactivity, the count value detected by the dosimeter changes every minute. It is more to take the readings within a period of average time. The longer the time interval is, the more the average is.The detector is used to measure and X- radiation. It is most suitable for measuring small changes in radiation levels and has high sensitivity for most commonly used nuclides.Applied to:1. organizations, such as stations and fire brigades, emergency response organizations, environmental protection organizations, hazardous material disposal, metal recycling companies, , etc., have a higher probability of being exposed to various radioactive substances.2. Ports, wharves, airports, etc. Because of the large of people and various types of and export goods, these places have a high probability of radiation pollution especially involving entry and personnel.3. Hardware factories, ceramic factories, hospitals, research institutions, laboratories, administration bureaus, universities, etc., have a higher probability of being exposed to various low-intensity or leaked radiation.4. Private individuals who are concerned about the quality of the living environment and safety, such as someone who to find the surrounding environmental pollution at home, food, water, etc.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Energy range: 20kev~3.0mevs30% (137Cs-)Real-time mileage: 0-99.99msV/hReal-time error: 10%Mean error: 3%Data record: 999 groupsPower supply: 5V/USB3.7V battery/2200mAhCharging time: 2-3 hoursTemperature range: -20-60CTemperature resolution: 0.1%Humidity accuracy: 2CHumidity measurement range: 0~100%Humidity accuracy: 3%Humidity resolution: 0.1%Size: 22.2*8*4.6cm