A simple, easy-to-use class 1 sound level meter

This sound level meter platform houses the solution that gets your job done faster and easier. Controlled via smart-device apps tailored to your task, get your work done with confidence.

Whether you are a complete novice, occasional user or an acoustics specialist – sometimes all you need is a simple sound level meter – one that provides you with reliable, accurate results without all the fuss. That is what B&K2245 delivers. This robust, class 1 sound level meter puts functionality, ease-of-use and versatility into the palm of your hand together with the reliability and confidence that is ensured with the Brüel & Kjær brand. B&K2245 works seamlessly with a range of apps, each providing a complete solution for a specific job-to-do. Accurate noise measurement, analysis and documentation has never been so simple.

B&K 2245 sound level meters are designed to be used when and where you have a job to do. They  can connect to your mobile phone via Wi-Fi® and be operated away from the sound field via an unparalleled mobile-app control interface. This means that the unit can be placed for measurement and fully controlled from a more convenient location, just as if you were standing with the SLM in hand.


B&K 2245 sound level meters come with the Noise Partner app pre-installed. This app can be used with minimal training and is perfect for simple broadband measurements, general-purpose sound pressure level measurements, and basic occupational, product, and environmental noise measurements.

Once the Noise Partner app is downloaded to your phone from the App Store®, all Noise Partner capabilities can be wirelessly controlled from that phone. Via the app interface, pictures, text and voice notes, and videos can be embedded with the measurements.


When the PC app has been downloaded and installed and the measurement is finished, your data can be transferred to the PC, wirelessly or with the supplied USB cable. Noise Partner PC software is preconfigured with the tools needed for storing, reviewing and reporting your data.


  • Noise measurements requiring IEC61672-compliant instrumentation
  • Road vehicle exhaust noise inspection with Exhaust NoisePartner
  • Basic broadband noise measurements with Noise Partner
  • Environmental noise assessments with Enviro Noise Partner
  • Occupational noise assessments with Work Noise Partner
  • Free-field sound power determination according to ISO3744 or ISO3746 with Product Noise Partner
  • Toy noise measurements according to EN71-1 with Product Noise Partner
  • Type-approved sound level measurement data integration with other systems using Open Interface for B&K2245 and HBK2255 BZ-7400
  • Single measurement range: 22.7–140.6dB(A) from noise floor to maximum level
  • Frequency range: 6Hz–20kHz
  • 16GB internal storage
  • Automatic measurement transfer to network or USB storage media for backup and analysis
  • Robust design for both indoor and outdoor measurements
  • Simplified user interface
  • Wireless connectivity
  • GPS for time and position
  • Calibrator auto-detection
  • Windscreen auto-detection and compensation
  • Powerful open interface for system integrators
  • Supported by a range of apps tailored to specific jobs

A complete solution

B&K 2245 Sound Level Meter is a complete package solution that includes the Noise Partner app for both mobile measurement control, display and data transfer and as a PC-based application for analysis and documentation.

Smart accessories

From tripods, calibrators, mobile phone holders, and more – Brüel&Kjær provides you with the accessories you need to complete any measurement task using B&K2245.

Hassle-free licensing

B&K2245 licences are installed in the instrument, enabling measurement functions on the instrument as well as:

  • Allowing connections to licenced mobile apps
  • Embedding licences in measurement files for editing in licenced desktop apps

The sound level meter

B&K2245 provides effortless usability with a dust- and water-resistant body that is rubberized for a more secure grip and ensures compliance with IP55. The seven control buttons can be comfortably operated with one hand, and the clear, bright display shows you the most important information at a single glance. With a 13-hour battery life, you can be sure it will not let you down.

Wireless connectivity

Using one of our apps on your mobile device, you can wirelessly connect to B&K2245, which provides the flexibility to control your measurements via your mobile device, thus avoiding possible body reflections or unsafe environments. Once the app has connected to the sound level meter, it will remember the instrument and automatically connect to it when in range.

A platform that helps you get the job done

The B&K 2245 platform includes a range of apps, each tailored to assist a specific job-to-do. Each instrument can be licenced for more than one app, so switching tasks is as easy as – switching apps. All available mobile apps can be downloaded from the App Store®. PC apps can be downloaded at www.bksv.com.

  • Enviro Noise Partner – for environmental noise surveys that includes markers to isolate sounds (for example, removing a barking dog or identifying the moment when a sound source is operating) and checklists to ensure each step is completed to local requirements
  • Work Noise Partner – for workplace noise surveys that guides you through a full work-day noise exposure calculation. Frequency analysis is included along with tools to select appropriate hearing protectors when needed
  • Product Noise Partner – for free-field sound power determination according to ISO3744 or ISO3746, or toy noise assessments according to EN71-1