Feature: 1. Radiation Measurement: The radiation energy in the air is ionized by means of a highly sensitive Geiger counter tube, the total radiation dose over a period of time is measured, and the actual radiation strength is calculated by the MCU. 2. High Accuracy: This radiation detector is easy to operate and has a strong anti interference ability and high accuracy and sensitivity of measurement. 3. Portable Design: This personal radiation detector has a portable design and compact size, which is easy to carry and use on the go. 4. Easy to Use: This radiation detector is controlled by buttons, simple to operate and easy to use. The test accuracy is 0.01μSv/hr, and the real time range is 0‑999.9μSv/hr with small error. 5. Battery Level Display: This radiation tester has a battery level display for easy use and timely charging. The tester can detect β rays, γ rays, X rays, and quickly detect the surrounding radiation intensity. Specification: Item Type: Radiation Detector Weight: 146g / 5.15oz Sensor: Geiger counting tube Material: ABS Detectable Types: β rays, γ rays, X rays Energy Range: 20kev-3.0mev≤±30% (137Cs-) Sensitivity: 0.5cps, μGy, hr (Co-60) Measurement Accuracy: 0.01μSv/hr Real Time Range: 0-999.9μSv/hr Accumulation Range: 0-99.99mSv Real Time Error: ≤10 Mean Value Error: ≤3 Measurement Cycle: 30 seconds Battery: 1 x AA Dry battery (shipped without battery) Product Size: Approx. 2.2x18.7cm / 0.9x7.4in Scenario: Since radiation has existed on the earth before the birth of mankind, the living creatures on the earth have been affected by a lot of radioactivity, and the food we usually eat also contains a lot of radioactive substances such as potassium 40. Radon is a general term for naturally occurring radioactive gases. Needless to say, the soil and rocks that make up the earth and the concrete will also release radon into the air. At the same time, they will also be irradiated by cosmic rays, so radiation is everywhere in life, outdoors, indoors, in hospitals, in nuclear power plants and so on, and the difference only lies in the strength of the radiation. Therefore, personal dose detector is used everywhere, it can be used to measure the radiation dose of indoor, outdoor, stone, food and so on.. Package List: 1 x Radiation Detector