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NSRTW_mk4 with 24/7 Data Access (1year)
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NSRTW_mk4 with 24/7 Data Access (1year)

Original price was: 775.00 $.Current price is: 687.29 $.

Categories , Tags ,
New microphone with
extended dynamic range

This purchase include:

1 Wireless Sound Level Meter Data Logger NSRTW_mk4

One year Access to 24/7 Data Collection. (a value of $175 USD / 225$ CAD)

FCC CE

TECHNICAL EQUIPMENT - FREE EXPERT GUIDANCE

This sound level meter comes in 4 configurations depending on:

  • • Monitoring duration required (weeks vs months)
  • • Connectivity (USB, WiFi, Cloud)
  • • Integration with your systems

→ An expert can guide you to choose the perfect solutions for your need (it's free)

This purchase include:

The Product

The Wireless Sound Level Meter Data Logger NSRTW_mk4 is the 4th generation of Convergence Instrument’s WiFi™ enabled smart integrating sound-level meters/dataloggers. It includes a digital MEMS microphone, an accurate date/time clock, a non-volatile 128 Mb recording memory and wireless connectivity.

Consult our NSRTW_mk4 detailed product page for features, specifications and more info about the product.

The Data Collection Service

  • 24/7 data collection from instruments anywhere in the world
  • No need for a dedicated server for data collection or emails
  • Automatic alarm emails with no need to configure email account
  • Automatic instrument configuration through the web
  • Data can be downloaded via simple web browser from anywhere in the world
  • Data can be viewed at any time on any web browser, such as PC, MAC, phone… etc.
  • 500 MB of storage space per instrument

Consult the Data Collection Tab on this page for more info on our 24/7 Data Collection Service.

Talk to an expert

✔️ Get help from noise expert for choosing the right model

✔️ Optimal configuration and specs for your project

✔️ Call us now or get email response within 24h

One Year Subscription to 24/7 Data Collection Access

Original price was: 210.00 $.Current price is: 186.23 $.

NSRTW_mk4

Original price was: 565.00 $.Current price is: 501.06 $.

In stock (can be backordered)

Key Features

Class 1 Precision

Class 1 sound level meter with digital MEMS microphone for accurate measurements

Wifi + USB Connectivity

Fast download and monitoring capabilities for flexible deployment

Extended Battery Life

Up to 5 days of battery life with integrated rechargeable battery

Outdoor Ready

Dust-Protected weatherproof enclosure for long-term outdoor installations

Product Tabs

Product Description

The Wireless Sound Level Meter Data Logger NSRTW_mk4 is the 4th generation of Convergence Instrument’s WiFi™ enabled smart integrating sound-level meters/dataloggers. It includes a digital MEMS microphone, an accurate date/time clock, a non-volatile 128 Mb recording memory and wireless connectivity.

Consult our NSRTW_mk4 detailed product page for features, specifications and more info about the product.

The Data Collection Service

  • 24/7 data collection from instruments anywhere in the world
  • No need for a dedicated server for data collection or emails
  • Automatic alarm emails with no need to configure email account
  • Automatic instrument configuration through the web
  • Data can be downloaded via simple web browser from anywhere in the world
  • Data can be viewed at any time on any web browser, such as PC, MAC, phone… etc.
  • 500 MB of storage space per instrument

Consult the Data Collection Tab on this page for more info on our 24/7 Data Collection Service.

Data Collection

    Once your first instrument installation and configuration is completed, you will be able to do the following with your CIDataSolutions™ Web access:

    1. Manage your CIDataSolutions™ account, meaning:
      • Manage your business information.
      • Manage your subscriptions and the instruments activation/deactivation for those you own or have access rights to.
      • Manage as many users as you want for your company’s account. Give them rights and accesses. Assign specific instruments to specific users.
    2. Manage your instrument setups:
      • Modifications to the instrument settings made via the web browser are transferred to the instrument at its next connection.
    3. View your recorded data in graphical form: Instrument’s temperature over time, Instrument’s battery voltage over time, instruments collected noise data for a specific period of time of your choice. Pan and zoom tools are available. You can also capture your graphics in jpeg format to paste them to your documents
    4. Setup alarm e-mails from your instruments when the measured noise level reaches a preset threshold or when the instrument’s battery falls below a critical voltage.

     

     

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Specifications

Bandwidth

20 Hz to 20 kHz
Microphone Sensor

Digital MEMs
Precision Class

Complies with the precision requirements of IEC61672-2002 Type I
Saturation Level (typical @ 1 kHz)

120 dB-A, 120 dB-C, 120 dB-Z
133 dB-A, 133 dB-C, 133 dB-Z (instruments shipped after December 15 2025)
Temperature Error

Better than 0.6 dB (-20°C < T < 60°C)
Sensitivity to Vibrations

60 dBSPL/g (20 dB lower than typical measurement microphone)
Weighting Curve

dB-A, dB-C, dB-Z
Noise-Floor (Typical)

30 dB-A, 46 dB-C, 52 dB-Z
29 dB-A, 32 dB-C, 36 dB-Z (instruments shipped after December 15 2025)
Recording Resolution

0.1 dB
Duty Rate of Signal Capture

100% – No Missed Samples
Min Log Interval

125 ms (8 points of Lpeak, Lmin, Lmax and LEQ per second)
Real-Time Spectral Display

2048-Point Power Spectrum – dB or Lin Scale.
Calibration

Field-calibrated using a 1/2" calibrator
Connectivity

USB
Internal Battery Type

Integral Li-Poly – USB-Rechargeable
Recharge Time

2 h 30 (Typical)
Internal Battery Autonomy (Full-Charge)

7 days while recording
Internal Battery Life

> 300 Charge/Discharge Cycles
Temperature Range

-20°C to 60°C (-4°F to 140°F)
Recording Memory

Non-Volatile Flash Memory
Recording Memory Capacity (RT128 Model)

128 Mb, Ex: can continuously record Lmax, Lmin and Leq levels at 1s intervals for 32 days, or 10s intervals for 320 days.
Recording/Erasure Cycles

Greater than 100 000
Data Retention

Greater than 20 Years
Dimensions

19 mm x 42 mm x 160 mm – (0.75” x 1.65” x 6.25”)
Weight

100 g (0.1 lbs)
Construction

Weather-proof enclosure
Microphone Dust Protection

Expanded polytetrafluoroethylene (ePTFE) dust and water barrier

Talk to an expert

OR

CALL US: 819-575-1990

Mon-Fri 9am-5pm EST

Which Model to Choose?

Feature NSRT_mk4 NSRTW_mk4 NSRTW_mk4 Cloud
Price Base price (no WiFi) Higher (adds WiFi) Highest (WiFi + Cloud service)
Battery Life 5 to 7 days on battery, months while externally powered Similar autonomy on battery, WiFi reduces battery time. Similar autonomy on battery, WiFi reduces battery time
WiFi Built-in No Yes Yes
24/7 Cloud No Optional / via local setup Yes, 1Y included
Best For Short-term logging with local download WiFi projects with local IT / VPN Remote 24/7 cloud noise monitoring
Clients Use the NSRTW_mk4 For

Clients Use the NSRTW_mk4 For:

🏗️

CONSTRUCTION SITE MONITORING

(3-6 months)

"We monitor sound levels for municipal compliance"

→ Industries: Contractors, Municipalities

🏭

INDUSTRIAL COMPLIANCE (OSHA/HSE)

"Continuous measurement for workplace safety standards"

→ Industries: Manufacturing, Factories

🌳

ENVIRONMENTAL IMPACT STUDIES

(6-12 months)

"Data collection for environmental reports"

→ Industries: Consulting firms, Government

Talk to an expert
5.0
Based on 3 reviews
5 star
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4 star
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1-3 of 3 reviews
  1. 익
    익
    익명의
    Verified owner

    Fabulous !

  2. DS
    DS
    David Skok
    Verified owner

    Superb after sales customer service!

  3. PT
    PT
    Paul Tierney
    Verified owner

    Great little unit.

You may also like…

Software Description Importance Download
Instrument Manager Universal Installer Instrument Management Software Essential Install BEFORE connecting the instrument
Instrument Listener Fast Connect Installer Must run on the server to receive and process incoming NSRT-W connections. Now includes the AutoCalc feature, which automatically calculates various metrics in batch and exports the data to a spreadsheet format Essential for WiFi connectivity on the server-side
Instrument RealTime Listener Must run on the server to allow any number of instruments to connect and present real-time data on the server’s display. Optional
Noise Sentry RT Community Noise Metrics Installer An application to calculate various noise metrics, such as CNEL, LDEN… and many others Optional
Instrument Disk Recorder An application to stream to disk the acoustic signal Optional
NSRT AutoCalc An application to calculate and automatically export standard metrics to Excel (LEQ, Lmin, Lmax, percentiles…etc.) Optional
NSRT Directivity An application to show the frequency response and directivity pattern Optional
NSRT_mk4 NSRT_mk4_Dev NSRTW_mk4 (Wireless) NSRTW_mk4 MQTT (Wireless)
Precision Class Type I Type I Type I Type I
Connectivity USB-only USB-only USB & WiFi USB & WiFi
Email Alarm Functions No No Yes No
Cloud Solution Compatibility No No Yes No (designed to work with a standard MQTT broker)
Weighting Curves A, C, Z A, C, Z A, C, Z A, C, Z
Values measured Lpeak, Lmin, Lmax, LEQ L instantaneous, LEQ Lpeak, Lmin, Lmax, LEQ Lpeak, Lmin, Lmax, LEQ
Recording of Acoustic Signal Included Optional (USB-Audio option) Included Included
Attachment System Wall or Tripod Mountable Wall or Tripod Mountable Wall or Tripod Mountable Wall or Tripod Mountable
Weight 3.3 oz
93 g		 50 g 3.3 oz
93 g		 3.3 oz
93 g
Data Non-Volatile N/A Non-Volatile Non-Volatile
Settings Non-Volatile Non-Volatile Non-Volatile Non-Volatile
Software Instrument-Manager
NSRT-Community-Noise-Metrics		 Instrument-Manager Instrument-Manager
Instrument-Listener
NSRT-Community-Noise-Metrics		 Instrument-Manager
NSRT-Community-Noise-Metrics
Timer Yes No Yes Yes
FFT Resolution (For Real-Time Display Only, Not Recording) 2048 points 2048 points 2048 points 2048 points
Generic Audio Driver Support Included Optional Included Included
Generic Com Port Driver No Yes No No
Platform Support Windows Windows, MacOS, Linux (and any platform that includes a generic USB CDC-class driver) Windows Windows
Open Communication Protocol No Yes (VCP over USB) No Yes (MQTT over WiFi)
Rechargeable Battery Autonomy 7-Days (Recording) No Battery 7-Days (Recording) 7-Days (Recording)
Recording Memory 128 Mb No Memory 128 Mb 128 Mb

Sound Level Meter Documentation

ENGLISH VERSION

VERSION FRANÇAISE

NSRT_mk4_Spark Data Sheet

NSRT_mk4 Data Sheet

NSRTW_mk4 Data Sheet

NSRT_mk4_Dev Data Sheet

NSRTW_mk4 User Manual

NSRT_mk3_mk4 USB Audio Interface

NSRT_mk4 Calibration

Cloud Instrument Setup

NSRTW_mk4 MQTT Protocol

NSRT_mk4 Dev Com Protocol

Over the Air Reconfiguration

Fiche Technique NSRT_mk4_Spark

Fiche technique NSRT_mk4

Fiche technique NSRTW_mk4

Fiche technique NSRT_mk4_Dev

NSRTW_mk4 Manuel d’utilisateur

NSRT_mk3_mk4 Interface Audio USB

NSRT_mk4 Étalonnage

Reconfiguration à distance