Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! [Nuclear Radiation Detector]Compared with traditional geiger counter, we use scintillator sensors,faster response time and higher accuracy, to detect Gamma, Beta and X-rays. Cumulative dose equivalent: 0.00uSv-999.99mSv. Energy range: 40KeV-3MeV 15%(for 137Cs) [Real Time Dose Rate Display]Our nuclear radiation detector quickly respond to the nuclear radiation situation of the measured object or the environment every second. At the same time, it also superimpose the total amount of nuclear radiation you have received since it was turned on until now. The cumulative dose can be reset to zero, and you can start over to record the cumulative dose at any time. [Radiation Detector with Power-off Memory Function]Even if there is a sudden power failure with the counter, the parameters you set before not disappear, including the cumulative dose rate and 12 groups of alarm data . When you turn it on again, you do not need to reset it, saving you time, and you do not have to be afraid of a sudden power outage. [Radioactive Detector with Smart Alarm]Enter the alarm setting option to set the current dose alarm value and the accumulated dose alarm value. Whether the detector screen is in sleep state or in operation,the radiation dose detected exceeds the alarm threshold,the radiation monitor automatically alarm. Light/Vibration/Sound 3 combined alarm modes to choose. [Application Areas]Widely applied in the environment where existing ionize radiation. Such as home improvement radiation, geological survey, iron, Inspection vehicles, nuclear power plants, industry, radiology, radiology laboratories and so on material: plastic Color Package Contents: 1 x Nuclear 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.