Feature:1. Decibel Meter with AC Weighing: The decibel meter uses a accurate capacitive microphone to catch sound, with A/C weighting, with a measurement range of 30‑130dB and a frequency response range of 31.5‑8.5KHz.2. Backlit LCD: The noise level measured by this sound level meter is expressed in dB and displayed on the LCD screen. The large screen is easy to read. Supports white backlight, easy to view even in low light conditions.3. Product Functions: This digital SPL meter has a maximum or minimum measurement value to represent the maximum or minimum value of sound generated within a certain period of time, with data hold function, convenient and practical.4. Applicable Scenario: This sound level meter can measure noise levels ranging from 30 to 130 dB, making it very suitable for noise levels in households, communities, cars, workshops, schools, offices, and factories.5. Convenient to Use: This portable noise meter has non slip side for easy grip. Powered by 3 AAA batteries (not included), convenient for use at any time. Equipped with automatic shutdown and low battery indicator, extending service life.Specification:Item Type: Sound Level MeterMaterial: PCPower Supply: 3 x AAA Battery (not included)Applicable Standard: IEC651 Type 2, ANSISI.4 Type 2Calibration Sound Source: 94dB at 1kHzMeasurement Range: 30-130dBAAccuracy: +1.5dB (Reference 94dB at 1kHz)Frequency Response: 31.5-8.5kHzResolution: 0.1dBFrequency Weighting: A/CAnalog Bar Graph: 2dB/1 bar graphDisplay Update Time: 2 times/s (FAST), 1 time/s (SLOW)Sampling Rate: FAST(125ms), SLOW(1s)Product Features:Sound Level Range: 30 to 130dB (auto calibration)Frequency Weighting: A/CFast or Slow Time Weighting SelectionMaximum Hold FunctionHigh AccuracyBar Graph DisplayLow Battery AlertWhite BacklightOver and Under IndicationTime and Date DisplayAuto Power Off Function Setting.Package List:1 x Sound Level Meter1 x Storage Bag1 x User Manual