Item Type: Nuclear Radiation DetectorMaterial: ABSProduct Size: Approx. 13 x 7 x 3 cm / 5.1 x 2.8 x 1.2 inBattery: 2 x AA battery (Battery Not Included)Measurement Mode: Nuclear radiation, electromagnetic radiation, formaldehyde monitoringPerformance: Power display, Chinese and English language conversion, alarm function, measurement unit, time setting, alarm setting, system clock, and two options for alarm modeDetection Rays: , X raysDetector: Energy Compensation GM Tube (Geiger Counter Tube)Measuring RangeDose Equivalent Rate: 0.01~1000Sv/hRelative Inherent Error: 15%Sv/hAlarm ThresholdDose Rate: Optional at 0.5, 1.0, 2.0., 2.5, 5.0, 10.0, 50.0, 100.0Sv/hDose Rate Unit: Sv/hMeasurement Display: Dose rate display per secondUse Environment: Temperature -10~ +45Relative Humidity: 95% (+45)Nuclear Radiation Unit: Sv/hElectromagnetic Radiation Unit: T, v/mFormaldehyde Monitoring Unit: mg/mApplication: Widely used in nuclear power plants, accelerators, steel, chemical industry, isotope applications, industrial X, non destructive testing, radiology, cobalt source therapy, gamma radiation, radioactive laboratories, environmental monitoring around nuclear facilities and other fields for person safety protection Monitoring and radioactive remindersFormaldehyde Monitoring Mode: Suitable for indoors, such as newly renovated houses, newly painted housesWeight: Approx. 242g / 8.5oz