Sound Level Meter

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Yellow Optimus:

The Ideal Solution for Simple Noise Measurements Optimus Yellow Sound Level Meters

The Optimus yellow instruments are a range of state-of-the-art sound level meters that have been designed to meet the very latest standards for noise measurement instruments.

It has been purposed-designed for applications where only basic noise data is required, such as Sound Level (SPL) or Maximum Sound Level (Lmax). These applications include fire alarm testing, machinery servicing and noise ordinance enforcement.


Why Choose Optimus Yellow?

  • Backed by our 15 Year "No Quibble" Warranty for your peace of mind
  • Get even more from your Optimus Red with 3 free places on our Cirrus Product Training Course (UK)
  • High Performance to Class 1 or Class 2 Standard
  • Quick, Simple and easy to operate
  • Fast, Slow & Impulse Time Weightings
  • dB(A), dB(C) and dB(Z) Frequency Weightings
  • VoiceTag™ voice note recording
  • AuditStore™ measurement verification
  • High resolution colour OLED display and back-lit keypad
  • Measure up to 140dB(A) and 143dB(C) Peak with a single 120dB measurement range
  • Pause & Back Erase as standard
  • 4GB memory with the option of 32GB
  • Long battery life

  • Which Optimus Yellow is right for you?

    There are 4 versions of the Optimus Yellow Sound Level Meters, 2 with Class 2 performance and 2 with Class 1 performance.

    The table below shows the different versions and options available with each instrument.

  • CR:152A
  • CR:151A
  • CR:152B
  • CR:151B