PROFESSIONAL & HIGH SENSITIVITY: nuclear radiation detector adopts high sensitivity G-M detection technology and with high accuracy of 0.01 Sv/h, 80cpm/Sv/(Co-60). The nuclear radiation dosimeter including Beta( ), Gamma(), and X-ray radiation detection, it will automatically alerts when the radiation level exceeds 0.5 Sv/h. MULTIFUNCTIONAL GEIGER COUNTER: The real time value and average value can be displayed on the screen so you can check them at the same time. The data is detected in real time every second, you can also view the trend of radiation changes in real time. Geiger Counter is equipped with a large LCD screen, don't worry even in dark places. USB POWERED OR BATTERY POWERED: The radiation detector with usb cable, you can use the charging cable without using the battery, just plug it in the socket and start to detect. You can also use 3 pcs AAA battery. Two types of power supply to meet your different needs. (battery not included) LIGHTWEIGHT AND EASY TO USE: This portable dosimeter with lightweight design, you can put this radiation detector into your bag and carry it to any where. The Geiger Counter is easy to use, it can be detected immediately after power-on without calibration, and the data is clear and straightforward even the elderly can use it easily. WIDE APPLICATION: The radiation dosimeter detector can be used to detect/monitor/measure low dose background environment either indoor or outdoor, which is widely used in home decoration radiation testing, irradiation processing enterprises, laboratories, geological surveys and etc, where ionizing radiation exists.