BR-9B Nuclear Radiation Detector X-ray Beta Gamma Detector Radioactive Tester Geiger Counter EMF Meter Electromagnetic Radiation Tester            Features:       & 9679; Small and portable body, large screen, measurement data is clear at a glance. & 9679; High sensitivity, quickly display the real value at each moment, with the characteristics of large fluctuation and high consistency with the detection result of the sensor. & 9679; Long battery life, you can turn off the screen to save battery. & 9679; With a real-time trend graph, the operation is simple and the data is clearer. & 9679; With mute, alarm mode. & 9679; Wide range of applications, the nuclear radiation detector can be widely used in nuclear physics, environmental monitoring and industrial fields.                  Specifications:       Material: ABS Color: white, black (optional) Model: BR-9B Screen size: 57 * 43mm / 2.2 * 1.7in Sensor type: energy compensation type GM tube Detectable types: Beta, Gamma, X-ray Energy range: 20kev~3.0mev≤±30%(137Cs-) Sensitivity: 80cpm/μsv/(Co-60) Test accuracy: 0.01μsv/h Real-time range: 0-99.99μsv/h Cumulative range: 0-99.999msv Real-time error: ≤10% Mean error: ≤3% Battery: 3 * AA 1.5V battery or 3 * 1.2V rechargeable battery (not included) Charging: USB 5V 2A input Charging time: ≥4 hours Item size: 105 * 70 * 30mm / 4.1 * 2.8 * 1.2in Item weight: 106g / 3.7ounce Package size: 150 * 100 * 55mm / 5.9 * 3.9 * 2.2in Package weight: 122g / 4.3ounce                  Package list:       1 * Nuclear Radiation Detector 1 * User Manual