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LiveNoise LNT-320 Noise Processor with WiFi and Ethernet

Noise Processor & LiveNoise Interface
Noise Processor & LiveNoise Interface
Noise Processor & LiveNoise InterfaceSE3-320 Noise ProcessorNoise Processor DisplayLiveNoise Module
  • Class 2 Noise Processor
  • Monitors and stores sound levels
  • Network connection to Supervisor software
  • HDMI monitor output available

Typical Applications

  • Open plan office and call centre noise
  • Factory noise level monitoring
  • Entertainment noise

Ordering Information

All pricing and ordering information is available on the main NoiseMeters web sites.

Noise Processor & LiveNoise Module

The noise processor and logging module can be mounted on a wall or other suitable surface. The Noise Processor part continuously measures the sound levels in line with the noise measurement standards. The LiveNoise Module takes these measurements, stores them, and makes them available to the LiveNoise Supervisor and Reporter software over your network. It also provides an HDMI output so you can display the sound levels on a computer monitor or HDMI television.

LiveNoise System

The noise monitor communicates continuously with the LiveNoise Supervisor software to provide real-time noise levels, long-term stored noise measurements and high-noise alarms. The LiveNoise Reporter software can generate reports of the noise and alarms over daily, weekly, monthly or other custom periods.

Alternatively, the noise monitor can upload its measurements for you to view using our Web Reporter system.

livenoise network

A system can consist of one or more LNT enabled noise monitors. They connect to your local area network using either WiFi or a wired Ethernet connection.

The noise monitors can work alone connected to a display, they can be connected to the Supervisor software for real-time display, or they can upload to the cloud server for online reporting.


The Noise Processor is mounted to a wall using the mounting plate and four screws. The LiveNoise Terminal is mounted close by on just two screws.

An optional security bracket is available for the LiveNoise Terminal.

Wired Connections

A standard USB cable (included) connects the LiveNoise Terminal to the Noise Processor.


The system requires 5V DC, which is provided by the power adapter that is included. The LiveNoise Terminal will need to be within 3m of a power outlet.

mounting the lnt-320 noise monitor

Network Connection - WiFi or Wired Ethernet

The LiveNoise Terminal can communicate with the LiveNoise Supervisor software to provide a real-time display of sound levels and for long-term noise measurement storage. With the Supervisor software running on a computer on your network, the LiveNoise Terminal just needs access to the same network.

If you are only using the Web Reporter for your noise reporting then the LiveNoise monitor just uses the network connection to upload its measurements to the cloud server.

Wireless or Wired?

If a reliable WiFi signal is available then the noise monitor just needs the network name and password to connect up. If you prefer a wired approach then connection can be made via an Ethernet connection (RJ45).

Acoustic Standards IEC 61672-2:2002 Class 2
  ANSI S1.4 Type 2
Frequency Range 20Hz to 20kHz
Measuring Range 30 to 120 dB
Deviation ± 0.5 dB
Frequency Weighting "A"
Noise Measurements Leq, Fast Sound Level
Additional Outputs 0-10 V or 4-20 mA
USB Port For USB memory stick configuration
Video Output HDMI
Internal Memory 16GB for up to 5 years storage
Noise Proc. 121 x 149 x 42 mm, 4.8" x 5.9" x 1.7"
LiveNoise Term. 70 x 88 x 29 mm, 2.8" x 3.5" x 1.2"
Power 5 VDC, max 12W (power adapter included)
lnt-320 noise monitor dimensions
(c) NoiseMeters 2024