Fangrui Product Details 1. Tasi Ta8151 Noise Measurement Sound Decibel Meter 2. Sensor: 12 Inch Condenser Microphone 3. Measuring Range: 30-130db 4. Measurement Accuracy: About 1.5db (at Reference Sound Pressure Level, 94db 1khz) 5. Frequency Response: 31.5hz-8.5khz 6. Frequency Weighting Characteristics: A 7. Resolution: 4 Digits, Resolution 0.1db 8. Dynamic Characteristics Selection: Fast Slow 9. Automatic Shutdown: After About 10 Minutes 10. Sampling Rate: About 2 Timessec 11. Power Supply: Two Aaa Batteries (not Included) 12. Data Retention: Support 13. Backlight Display: Support 14. Applicable Scenarios: Noise Measurement In Indoor And Outdoor, Electrical Appliances, Cars, Libraries, Construction Sites, Etc. 15. Lcd Size: About 36x33mm 16. Overall Size: About 20.5x5.5x3cm 17. Weight: About 98g 18. Features: 19. High-precision Condenser Microphone, No Need To Contact, Can Measure The Quality Of Sound In Various Environments, Quickly And Accurately Display The Test Results 20. Large Screen With Backlight Display, Convenient To Use And Measure In Dark Environment 21. With Bracket Design On The Back, The Desktop Can Be Placed Freely For Easy Viewing Of Data 22. With Protective Cover, Multiple Protection, Drop-proof, Dust-proof And Shock-proof 23. With Cloth Bag, Convenient Storage, Light And Portable