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Product Overview

The Amprobe SM-20-A Sound Meter has been designed to check compliance with safety regulations and perform acoustic analysis by safety engineers, health, industrial and safety offices as well as quality control. The SM-20-A offers a PC interface. They use two different weighting filters required by the IEC651 and ANSI S1.4 Type 2 for audio filtering. The A weighting is for general noise sound level and the C weighting is for measuring sound level of acoustic material control in various environments (ie 94dB 1 kHz etc.)
  • A and C weightings for checking compliance with safety regulations as well as acoustic analysis
  • Measuring ranges: A weighting 30~130dB, C weighting 35~130dB
  • Frequency range: 31.5Hz~8KHz
  • Display with 0.1dB steps on a 4 digit LCD
  • Slow (1 sec) and fast (125ms) response settings to check peak and average noise levels
  • Max/min recording
  • Internal memory, 14,000 records
  • Recording intervals from 1 second to 8 hours
  • PC computer download capabilities
  • Data hold to freeze reading on digital display
  • CE, designed to meet IEC651 type 2, ANSI S1.4 type 2


Sensing & Instrumentation; Test & Measurement; Portable Devices


Carrying case, users manual, battery(installed),USB cable download and software CD.
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Product Specifications, Documents & More

  • Accuracy dB: 1.5dB
  • External Depth: 38mm
  • External Height: 200mm
  • External Width: 55mm
  • Operating Temperature Max: 40°C
  • Operating Temperature Min: 5°C
  • Resolution (db): 0.1dB
  • SVHC: To Be Advised
  • Sound Level Max: 130dB
  • Sound Level Min: 30dB
  • Weight: 233g


Availability:  2

  • 2 in stock for same day shipping
Check stock and lead times
    More stock available week commencing 12/21/15

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Price: $399.95 $399.95



Quantity List Price
1+ $399.95

Legislation and Environmental

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Customer Reviews

AMPROBE INSTRUMENTS - SM-20A - SOUND METER, 30 to 130DB, 1.5DB 5 5 2 2
Works Awesome I work in a manufacturing plant and we regularly check the sound levels to make sure we are using the right hearing protection. We have been using the Amprobe SM-20-A Sound Meter for a while now and its ease of use and simple operations make for quick and easy testing. Love it and recommend it to everyone. March 29, 2012
This Product Confirmed The Level Of Noise Contributing To My Hearing Loss I was amazed,It not only proved to be invaluble in my work, but to prove that the levels I was trying to prove were causing my hearing loss were confirmed by the SM-20. Lightweight And accurate to + or - 1.5dB. A great audio measuring tool at a great price March 29, 2012
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Looking for a replacement battery for sound level meter (part number SM-20A).
3 years, 2 months ago
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According to datasheet, this sound level meter uses 9V NEDA 1604A battery. So suggested part number for battery is GP1604AU-C1 from GP batteries.
3 years, 2 months ago
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