Indoor Environment Monitor, Real-Time Monitoring And Refreshing Of Noise/Temperature/Humidity Multifunctional Desktop Noise Meter, Comprehensive Monitoring Of Noise, Temperature, Humidity, Time (With Alarm Clock Function), Noise: 30-130db, Accuracy 1.5db, Temperature: 0-50, Accuracy 1/Humidity: 0 -100%Rh Accuracy 3%Rh Various Noises Can Always Be Heard In , Which Affects Normal Rest And Learning And Can Cause Mental Breakdown. Capacitive Microphone Sensor, Ultra-Thin Metal Vibration Film Practical Output Instantaneous Response Capacitive Microphone Sensor, Three Conductive Layers Determine Its Frequency Response And Sensitivity. The Diaphragm Is Lighter And The Response Speed Is Faster. Description: 1. Model: SW-525S 2. Display: White Display 3. Built-In Backup Lithium Battery: 4000mah 3.7V Lithium Battery 4. Storage Function: 2S/Pen, Can Be Stored For One Year [Only Noise Data Is Stored] 5. Communicate With Computer: Communicate With Computer Through Usb Cable 6. Function: Alarm Prompt (Sound + Display); Alarm Clock Function 7. Time Display: 24-Hour Format 8. Temperature Display: 2 Digits 9. Humidity Display: 2 Digits 10. Power Supply : DC 5V 1A Type-C Usb Interface 11. Measuring Range: 30-130DB 12. Accuracy: 1.5DB (Based On Standard Tone, 94DB@1khz) 13. Frequency Response: 31.5 Hz~8.5 Khz 14. Frequency Weighting: A Weight 15. Response Time: Fast (Fast) 16. Microphone: 6mm Condenser Microphone 17. Digital Display: 3 Digits 18. Resolution: 0.1db(Less than100db)1db(Greater than100db) 19. Working Temperature And Humidity: 0-40C10%-80%Rh 20. Low Battery Prompt: Less than 3.6V 0.1 Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Material: ABS colour: As Shown Package Contents: 1 x Multifunctional Desktop Noise Meter 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.