Environmental Noise Monitoring Systems

Portable and Permanent Sound Level Meter-Based Solutions

Environmental noise monitoringWhether the goal of your outdoor noise monitoring is to provide long-term noise monitoring with remote access to the system and a schedule of alerts and alarms, to deploy a system and retrieve it later to analyze results, or to make an attended measurement, Larson Davis offers a nose monitoring system that fits your environmental noise testing needs. Our environmental noise monitoring systems offer flexibility and accurate, reliable results in rugged packaging designed to withstand the elements.


  • Airports
  • Communities
  • Construction
  • Industrial Plants
  • Mining Operations
  • Motorsports
  • Railways
  • Stadiums
  • Traffic
  • Wind Farms
  • NMS045 long term permanent outdoor noise monitoring system

    Permanent, Long-term Noise Monitoring

    SoundAdvisor™ Model NMS045

    Model NMS045 delivers 24/7 connectivity, continuous power capabilities, and a rugged design to simplify your long-term testing. Encased in a fiberglass enclosure, NMS045 is mounted to a permanently placed pole.

    • 24/7 network access
    • Easy to install and maintain
    • AC or solar power options
    • Real-time email and text exceedance alerts

  • NMS044 portable outdoor noise monitoring system

    Advanced Portable Noise Monitoring

    SoundAdvisor™ Model NMS044

    Model NMS044, similar to Model NMS045, is a completely wireless solution designed to run indefinitely on solar power, allowing you to take measurements and view them 24/7. A rugged case houses the system making it an ideal solution for remote noise monitoring.

    • 24/7 network access
    • Optional sound recording
    • Solar power options
    • Real-time email and text exceedance alerts

  • LD NMS SE Battery powered Portable Noise Monitoring System

    Portable Noise Monitoring with Sound Recording

    SoundAdvisor™ Model NMS-SE-831C

    When you want to deploy a system to make measurements and retrieve it later to analyze the data, Model NMS-SE-831C is an ideal choice. The system can be configured to record sound, assisting with noise source identification, and runs on battery power for up to one week.

    • Noise source identification with sound recording
    • Designed to deploy, measure, retrieve, and analyze data
    • Up to one week battery life with 8 D-cell batteries

  • LD SoundExpert Noise Monitoring Kit Model NMS048 with EPS048 OPT3

    Portable Noise Monitoring

    SoundExpert™ Model NMS048

    SoundExpert Noise Monitoring System Model NMS048 offers basic functionality for short-term monitoring. Deploy the system and operate on battery power for up to two weeks (or longer via solar or line power) before retrieving and downloading measurement data. The system does not offer 24/7 access to measurements or real-time alerts.

    • Designed to deploy, measure, retrieve, and analyze data
    • Weatherproof, lightweight, and compact
    • Affordable, entry-level system
    • Long battery life, plus option for solar or line power

  • LD SoundAdvisor Model 831C Sound Level Meter with Phone App

    Handheld, Attended Monitoring

    SoundAdvisor™ Model 831C

    Model 831C delivers connectivity, extensive software features, and small form factor, making it ideal for handheld operation. Control and monitor data via any PC or mobile device with a standard web interface. Includes options for sound recording, exceedance alerts, FFT analysis, and more.

    • Flexibility for integration
    • Customizable by application
    • Easy setup and data download
    • Sound recording available

  • Sound Level Meter Model 821ENV

    Basic Handheld Attended Monitoring

    SoundExpert™ Model 821ENV

    SoundExpert Sound Level Meter Model 821ENV offers basic functionality for handheld noise level measurements. With a large, responsive touch display the meter is ideal for handheld operation and short-term measurements.

    • Basic, entry-level handheld meter
    • Automatic data download
    • Flexible powering options, including wireless charging