High Sensitivity Nuclear Radiation Detector - Requires "AA Rechargeable Batteries" or "AA Batteries". Batteries not included. You can search and buy on Amazon. Geiger counters can use rechargeable or dry batteries. A nuclear radiation monitor requires two batteries. A professional Geiger counter, the Geiger core radiation detector has built-in audible and visual signals for capturing radiation levels. With Large LCD Screen - The large LCD screen of the nuclear detector allows you to read real-time values easily and quickly. Even in dark environments, you can still clearly see the numbers on the screen. Press the power button to put the screen into night mode. The maximum measured value is 1000Sv/h. Portable and easy to use - Our handheld nuclear radiation detectors are small and portable. Detectors are available in Sv/h. Our instructions are detailed and the dosimeter is easy to operate, suitable for beginners, seniors and advanced users. The data is also saved after a power failure. Daily use of nuclear radiation detectors helps avoid radiation hazards in everyday life. Quick response, intelligent protection and alarm - the nuclear radiation monitor responds quickly to radiation, and timely alarms in high-risk environments. The instrument is highly flexible and can measure ambient background. The detection value is updated in real time. Enter the alarm setting option to set the dose rate alarm value. When the radiation value exceeds the set value, the nuclear radiation dosimeter will automatically alarm. Wide application - nuclear radiation monitors are widely used in the following fields for personal safety protection monitoring and worker radioactivity indication: nuclear power plants, gas pedals, steel industry, chemical industry, isotope applications, industrial X and non-destructive testing, radiology , cobalt source processing, radiation, environmental monitoring around radioactivity laboratories and nuclear facilities.