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Environmental noise is one of the most presentpollutants in the world today, with potential negative impacts onyour health. Our Noise Meter uses a built in microphone on yourhand held device to determine the level of sounds it detects, anddisplays this in decibels (dB). It has been designed solely tomeasure noise levels wherever you are. You also have the ability torecord and save your noise levels to be played back at a laterdate.