Feature 1、Frequency Range: The frequency response range of this decibel meter is 30Hz-8KHz, can display the maximum and minimum sound values in the area, and provide real time data on the sound level in the area 2、Fast Slow Speed: This sound level meter features fast slow speed response, with a detection error of ±2dB. The 125ms fast response is suitable for ordinary environment, and the 1sec slow response is suitable for environment with relatively large changes in noise level 3、A Weighting Function: This noise decibel meter features A weighting and simulates the frequency characteristics of low strength human ear noise, making it suitable for detecting environmental noise 4、Windproof Ball: This portable sound level meter is equipped with a windproof ball to reduce the noise caused by wind drag, ensuring accurate and dependable measurement, and is suitable for more scenarios 5、Versatile Application: This A weighting noise decibel tester is suitable for sound level detection in factory, traffic environment, home, baby room, and other places, which is convenient and practical Item Type: Sound Level Meter Product Material: ABS Power Supply: 2 x AAA Battery (not included) Measurement Range: 30-130dB Sampling Rate (FAST): 125ms Sampling Rate (SLOW): 1sec Noise Accuracy: ±2dB Frequency Response Range: 30Hz-8KHz Resolution: 0.1dB Frequency Weighting: A Weighting Analog Bar: Yes Data Hold: Yes Maximum Minimum Value: Yes Auto Power off: Yes Working Temperature: 0-40℃ Working Humidity: ≤80%RH Package List 1 x Noise Decibel Meter 1 x Screwdriver 1 x User Manual