MCM Electronics

Digital Sound Level Meter with USB InterfaceMCM Part #: 72-945  |  Tenma Part #: 72-945

Digital Sound Level Meter with USB Interface 4 stars from 1 review.
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Sound Level Meter with USB Interface Flagship of the Tenma sound level meter line provides features normally exclusive to sound level meters costing much more. It is perfect for sound system testing, speaker system measurement and environmental noise level monitoring.

Product Description

  • USB interface with datalogging software
  • A and C weighting
  • Selectable fast / slow response time
  • Analog bargraph display
  • Large 1999 count backlit LCD display analog bargraph and numerous on-screen icons
  • USB interface with included cable and datalogging software
  • Included AC adaptor or battery operation
  • Selectable MIN or MAX hold and data hold function
  • Three measurement ranges
  • Threaded insert which accepts standard tripod mount
  • 0.1dB resolution
  • Selectable auto-power-off
  • Rugged blow molded carry case
  • Removable windscreen
  • Includes manual and 9V battery

    Measurement ranges:

  • Low: 30 ~ 80dB
  • Medium: 50 ~ 100dB
  • High: 80 ~ 130dB
  • Auto: 30 ~ 130dB


  • Frequency range: 31.5Hz ~ 8KHz
  • Microphone element: ½" electret condenser
  • Sample rate: 0.5 seconds
  • Time weighting: 125mS (fast), 1 Sec. (slow)
  • Accuracy: ±1.4dB @ 1KHz, 94dB
  • DC output: 10mV/dB, 1KΩ load
  • AC output: 1VRMS per each range step, 100Ω load
  • Dimensions: 9¾" (L) x 2½" (W) x 1" (D)

  • Product Reviews

    • "For whom the deci Bells toll" by tigerpaw on 1/2/2013
      Overall: 4 out of 5

      This unit is fairly easy to operate, but setting the time was a #@%&^% bear. Once you make it through that (it was somewhat perplexing), it's relatively easy to use. I've taken it out at night and recorded the dB ratings of a local geothermal plant. Measuring frequencies would be useful, as LFN (low frequency noise) is known to cause health problems. The tripod that comes with it may be adequate for a small digital camera, but I'd hesitate to use it with the sound meter.

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    Package Specifications & Dimensions
    Weight:4.34 lbs.
    Warranty:365 days
    Need to Return?
    Length:15.75 in.
    Width:11.5 in.
    Height:4.25 in.
    Shipping Information
    Extra Shipping Charge:No
    Drop Ship:No
    Catalog Pages

    MCM Cat 57, Page 1289

    MCM Cat 56, Page 1131

    PDF Reference

    Requires Adobe Acrobat Reader.

    Mfr. Info

    Tenma Logo
    Mfr. Name:Tenma
    Mfr. Part Number:72-945