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