MCM Electronics

Digital Sound Level Meter with USB Interface By Tenma (72-945) MCM Part #72-945

4 stars 1 review
MSRP: $349.00
You Save: $230.00 (66 %)
This product currently has limited stock.

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.

Specifications Top

  • 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)
    Part Numbers
    MCM Part #:72-945
    Tenma Part #:72-945
    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
  • Product Reviews Top

    • by tigerpaw

      on 1/2/2013

      For whom the deci Bells toll

      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.