Quantum Indoor – Cloud-based Noise Monitor

Cloud-based Monitoring

Quantum Indoor is a remote noise monitor with built-in cloud connectivity, ideally suited for long-term occupational indoor monitoring.

  • Ideal for permanent occupational monitoring
  • Class 2 internal noise monitor to IEC 61672-1: 2013 (class 1 variant available)
  • Cloud-connected to allow remote monitoring of noise across your site
  • View noise data from multiple noise stations simultaneously
  • Real-time SMS and Email trigger warning notifications for effective noise management
Instrument class

Choose from the Class 1 Quantum Indoor with a remote microphone or the Class 2 Quantum Indoor with a fixed microphone

Meets IEC 61672-1:2013. Supplied with a 2 metre microphone preamplifier extension cable

Meets IEC 61672-1:2013

- +
SKU: CR900
Tag: Cloud-based Monitoring


The Quantum Indoor – Cloud-based Noise Monitor

Take your indoor noise monitoring to the next level

Quantum Indoor is a powerful noise monitoring solution with built-in cloud connectivity, ideally suited for unattended indoor noise monitoring across various applications. Quantum Indoor can be used for:

Long-term occupational noise monitoring
Identifying the source and type of noise that is occurring
Highlighting where noise control measures are required

The small and discreet monitor is easily installed. Quantum Indoor measures everything you need for comprehensive indoor noise measurements and sends the captured data directly to Cirrus Research’s cloud platform. This allows you to access your live data on the cloud from wherever you are and whenever you need it. On the MyCirrus cloud platform, you can view and analyse historical data and create detailed reports. You can also set up comprehensive event-based triggers to capture audio recordings and send alerts to users via text message, email, or the dedicated MyCirrus smartphone mobile applications. That way, you stay updated and can react to and control real-time noise events.

24/7 Monitoring

Quantum Indoor

Watch the Quantum Indoor product video to find out more about how our Quantum Cloud platform can help you


Think outside the box with our comprehensive indoor noise monitoring solution

Quantum Indoor is powered by our intuitive cloud platform, MyCirrus. Available with flexible subscription plans, MyCirrus provides a comprehensive solution to remote noise monitoring for any industry and application.

You can use a single Quantum Indoor monitor or link several units to create a cloud-connected network of noise monitors, allowing you to get the full picture of the impact noise is having on your site.

Using Quantum portal, you can see a live noise map using the Floor Plan view, perfect for seeing noise levels where they’re occuring and providing context for your measurement data. Thr floor plan allows you to respond in real-time to noise events and identify potential areas of concern before they pose significant risks.

Image link

Each Quantum Indoor unit communicates with the MyCirrus cloud platform, sending noise data to it every second. This data is then displayed in the live feed on Quantum portal, allowing you to view it remotely around the clock, from any device, anywhere in the world.

If you’re using set measurements, you can view your time history and octave band data, which is stored on MyCirrus, along with any audio data recorded during the measurement period.

Image link

You can set up several noise-based event triggers for audio capture and real-time alerts, based on your own set of conditions for acceptable noise emissions. Notifications can be set-up to be sent via automated email, SMS and push notifications through our dedicated smartphone application, allowing for noise issues to be controlled before a non-compliance condition arises.

Audio recordings are made when a noise event is triggered, so you can review and identify the noise source easily. Each recording can be played back from within the Quantum portal or downloaded to your PC/laptop for more in-depth analysis.

Image link

Quantum Indoor captures both 1:1 and 1:3 octave band data alongside all other noise measurement parameters, which is stored in and accessible through the Quantum portal. This information allows you to analyse your noise data in greater detail to better understand the nature of the noise and its potential implications.

You can use the frequency analysis screen in Quantum portal to view your the frequency data in exquisite detail. Explore each peak and trough in a fully navigable 3D model.

Image link

From within the Quantum portal, you can create detailed noise reports based on the data captured by your Quantum Indoor units. Several standard reports are available from the Quantum portal, with further user-definable options are planned for a future release.

You can also export your data to our incredibly powerful licence-free reporting software, NoiseTools, for further in-depth analysis of your noise data. You are also able to customise your reports with your organsation’s branding for a more tailored and professional look.

Image link

Applicable standards

IEC 61672-1: 2013 (Class 1 – CR:901)

IEC 61672-1: 2013 (Class 2 – CR:900)

IEC 61260: 1995 (1:1 and 1:3 octave band filters)

ANSI S1.4 – 1983 (R2006)

ANSI S1.43 – 1997 (R2007)

ANSI S1.11 – 2004 (1:1 and 1:3 octave band filters)


EN 61000-6-3: 2007+A1: 2011

EN 61000-6-1: 2007


MK:224 pre-polarised

Measurement range

20 to 140dB RMS in a single range

Noise floor

<19dB(A) Class 1 <22dB(A) Class 2 Frequency weightings

RMS & Peak: A, C & Z measured in parallel

1:1 octave bands: 31.5Hz to 16kHz

1:3 octave bands: 6.3Hz to 20kHz

Time weightings

Simulatenous Fast, Slow and Impulse

Time history data rates

10ms, 100ms, ½ sec, 1 sec

Live data refresh rate

1 sec

Live data view

Noise at work (LAF, LAeq & LCPeak)

Environmental (LAF & LAeq)

Custom (LAeq, LCeq, LZeq, LAFMax, LASMax, LCPeak & LZPeak

Measurement control

User-definable scheduled measurements & user-selectable 5min, 15min, 30min, 1hr repeat timers

Stored values

LAeq, LCeq, LZeq, C-A, LAE, LEX8, LAFMax, LASMax, LCPeak, LAF1, LAF5, LAF10, LAF50, LAF95, LAF99, LAeqT1 & LAeqT2

1:1 octave bands: 31.5Hz to 16kHz

1:3 octave bands: 6.3Hz to 20kHz

Time history of 1:1 & 1:3 octave bands


Audio quality

Standard (16bit/16kHz)

High (24bit/48kHz)


127 x 360 x 66mm




User-selectable dual integrators: OSHA HC, OSHA PEL, MSHA HC, MSHA PEL, ACGIH, Custom A & Custom B

Moving average

User-selectable: 5 min, 15min, 30min, 60min


DIN rail (standard)

Wall mount

Pole mount

Tripod mount


4GB standard – 30 days of measurement data or 24 hours of standard audio


PoE IEEE 802.3af-2003 37V-57V

Power consumption

Approx. 5w

Operating conditions


-10°C to +50°C (operating)

-20°C to +60°C (storage)


Up to 95% RH non-condensing

Network connections


Dual-band WiFi (2.4GHz & 5GHz)


Additional information

Weight 1.20 kg
Dimensions 36.0 × 12.7 × 6.6 cm

Occupational Noise

Hardware Features

Compatible Applications


Cirrus Research

Monitoring Duration




Quantum Indoor Cloud Based Noise Monitor

Quick Start Guide

Quantum Indoor Cloud Based Noise Monitor


There are no reviews yet.

Be the first to review “Quantum Indoor – Cloud-based Noise Monitor”

Your email address will not be published.