Features: 1. Real-time detection and total dose: The radiation dose rate can be detected in real time, and the cumulative dose value can be recorded at the same time. 2. Two power supply modes: The detector supports two power supply modes: battery and USB. You can use 3 AAA batteries or a rechargeable USB cable for power. 3. A variety of screen display functions: adjustable alarm reading value, switching between Chinese and English, screen backlight, real-time dose rate curve display function, etc. according to your needs. 4. Built-in data memory card: the accumulated dose value, dose rate alarm reading value, dose alarm threshold and other data will not be lost after power failure. 5. High-performance chip: using 32-bit processor, strong anti-interference ability and high detection accuracy range. 6. Wide range of applications: The radiation tester can be widely used in decorative stone detection, industrial nuclear pollution detection, geological inspection and testing. 7. Simple operation: You can enter the setting interface with one key, adjust the alarm clock preset value, time, switch between Chinese and English backlight mode, curved screen, particle sound switching and other functions. Specification: Model: FS-600 Colour: Black Material: ABS Dose rate range: 0.1 μSv/h ~ 10mSv/h Dose range: μsv ~ 10Sv Sensitivity: >1cps/uSv/h (under Co60 condition) Relative inherent error: