Features 1、1. Hand-held instrument design, built-in high-performance battery, easy to carry. Equipped with data logging function, the time interval can be set manually on the menu. 2、2. The data can be exported to the computer, a label is generated for the file, the electromagnetic data and the Geiger count data are stored in different folders, and it also supports viewing the recorded data. 3、3. The shutdown timer can be set, providing no shutdown/5 minutes/10 minutes/30 minutes shutdown settings. Support alarm value setting, language setting. 4、4. Built-in temperature and humidity detection sensor, temperature measurement - 15 degrees Celsius to 110 degrees Celsius, high detection sensitivity, especially suitable for environmental radioactivity monitoring, detection of trace electromagnetic radiation. Specification Material: ABS Color: orange + black Cumulative dose equivalent: HP (10) 0.0 usv - 99.99 msv Dose Equivalent Rate: HP(10) 0.1 USV/H-9.99 MSV/H Response time: 3S Dose response: <±20% (1usv/h-99.99msv/h) Energy Response: <±30% (48KeV-1.3MeV) Relative inherent error: <±15% Battery: 1*Lithium battery, 3.7V, 1800mAh (included) Product size: 175*70*30mm/6.89*2.76*1.18in Item Weight: 230 g / 8.11 oz Packing size: 195*95*35mm/7.68*3.74*1.38in Package List Geiger counter *1 USB cable*1