3M Noise Indicator Badge flashes red when noise levels become dangerous
Be alerted to dangerous noise levels and identify areas where hearing protection is needed. The 3M Noise Indicator Badge displays a green flashing LED indicating noise levels are safely below 85 db. When noise levels exceed 85dB, the badge flashes a red LED warning you of unsafe sound levels. This badge conveniently clips to your shirt or jacket and includes a rechargeable battery that runs up to 200 hours between charges. Charges with a mini-USB cable (Item no. 195430, sold separately). USA made.
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