Ranos Ecosystem

The Ranos Ecosystem is the best solution for accurate wireless outdoor noise monitoring and is used at festivals and construction sites, by noise monitoring professionals as well as smart cities. Please leave us a message and we'll be happy to help.

Ranos dB 1

Measurement accuracy according to IEC 61672-1:2014 Class 1* Out-of-the-box solution for the professional market.
  • Class 1 measurement accuracy*
  • Calibrated
  • Detachable microphone
  • GPS

* Validated by an accredited lab using IEC 61672-3:2013 class 1 test procedures.

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Shipping from end of July '22

Ranos dB 2

Our most sold device. Very accurate and fully configurable.
  • Best price/accuracy on the market
  • Class 2 measurement accuracy*
  • CE Mark
  • DSS Connect App (Android)
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Ships in 1 business day

Ranos Indoor

Accurate indoor sound level meter. LoRaWAN based, external power supply.
  • Indoor noise level meter (IP54)
  • Integrated microphone
  • 5V External power supply
  • LoRaWAN™ (EU868, US915, AS923)
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Ships in 3 business day

Use the DSS Connect App (Android) to control and configure the Ranos series.

LoRa keys and measurements settings by the
DSS Connect App (Android).

All-in-one solution for monitoring and reporting sound level measurements

Reliable and accurate wireless noise monitoring anytime and anywhere. The perfect tool for smart cities, builders, festivals and much more.

Plug & play

Easy and quick setup and connection. Just configure, mount, switch on.

LoRaWAN™ compliant

LoRaWAN™ network communication for indoor and outdoor usage. No internet connection needed.

24/7 live measurment data

Anytime and anywhere access to the latest sound level measurements, including GPS coordinates of the sensor, on the IoT Dashboard+.


Zero emission. No power supply or internet connection is needed. Can be installed anywhere.

High quality

High quality sound level monitoring. Class 1 (IEC 61672). Engineered using state-of-the-art technology. Produced with care in The Netherlands.


High-grade, damage resistant waterproof (IP67) casing for year-round outdoor operability in all weather conditions.



Emission free
The sound sensors from Dutch Sensor Systems are durable and fully recyclable. Due to the solar panel, the Ranos dB series is 100% emission-free.

The use of recyclable materials is important to produce less waste and thus reduce our ecological footprint. The housing is made of HIPS, which is a type of thermoplastic that can be easily molded using heat and recycled for a wide variety of applications.

DSS Dashboard+

  • Live sound level measurement data
  • Cloud access on any (mobile) device
  • Reporting and automatic triggers
  • Geolocation using GPS
  • Listen and tag audio samples (when using Ranos Tag)
  • Receive notifications about sensor health status
  • Use measurement data in your own backend systems

Audio specs

  • dBA & dBC frequency weighting
  • 20 Hz to 20 kHz frequency range
  • 33 to 121 dB dynamic range
  • 48 kHz DSP sample rate
  • Fast, slow, Leq time weighting
  • LAeq ,LCeq, dB(A,C)fast, dB(A,C)slow
  • Adjustable measuremens interval
  • Electret condenser microphone
  • Omnidirectional microphone directivity
  • Detachable microphone fixation
  • Calibrated frequency response / Finite Impulse Response (FIR)
  • Measurement accuracy according to IEC 61672-1:2014 Class 1* (* Validated by an accredited lab using IEC 61672-3:2013 class 1 test procedures)

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