Feature●(High precision nuclear radiation detector -0.01μSv/h) Uses a highly sensitive GM type energy compensation tube as a sensor type. It displays the real-time dose ratio, average dose ratio, and counting percentage ratio, and simultaneously record cumulative doses. Measurement range: 20kev~3.0mev≤±30%(137Cs-)●LCD Display: Equipped with a backlit LCD display, you can see the measurements at a glance and use it even in dark environments. You can also display and monitor simultaneously on one screen without switching between real time and average values●USB interface: In addition to direct use of batteries, the radiation tester has an independent USB interface, so you can use it directly to the power source. USB Input 5V 1A, 3 * AA 15V or 3 * 1.2V rechargeable battery (not included)●Compact and Easy to Use: As a portable nuclear radiation detector, it is compact, lightweight and easy to carry. Adopts a high-performance microprocessor for easy operation. The Geiger Counter radiation meter detects radiation almost instantly, and the radiation data is updated in real time●Widely Used: Radiation detector is widely used in private home monitoring applications, private homes, public facilities, nuclear power stations, accelerators, iron steel, chemical industry, etc. We offer a one-year warranty and lifetime technical support to all our customers. If you have any questions, please feel free to contact usDescription
                        Material: ABS. 
Color: Black 
Screen size: 57*43mm/2.2*1.7in 
Sensor Type: GM Type Energy Compensation Tube 
Detection Type: Beta, Gamma Line, X-Ray 
Capacity Range: 20kev~3.0mev≤±30% (137Cs-) 
Sensitivity: 80cpm/usv/ (Co-60) 
Test accuracy: 0.01μsv/h 
Real-time range: 0-99.99μsv/h 
Buildup: 0-99.999msv 
Real Time error: ≤ 10% 
Average error: ≤3 
Battery: 3*AA15V or 3*1.2V rechargeable battery(not included) 
Charging: USB input 5V 1A 
Charging time: ≥4 hours 
Size: 4.17*2.8*1.2in