For occupational noise, the Optimus Red sound level meter is the ideal instrument.

Simple to use with the very highest level of performance, you can be sure that an Optimus Red will give you what you need.

With three simple button pushes (On, Calibration, Start) you can start a measurement and get all of the information you need to assess and deal with your noise issues.

All of the optimus sound level meters will measure all of the available functions at the same time.

This means that no matter what the display is showing, you can be sure that you can't choose the wrong function. For example; if you have set the instrument to display the Leq and you need to see the Octave Bands, just press the right arrow key once and you will see the octave band. Press again to see Dose view which will give you all of the information you need to meet OSHA, MSHA or ACGIH.

Simple operation with an ergonomic design

  • Simultaneous measurement of all workplace noise parameters with additional two “virtual” noise meters
  • VoiceTag™ note recording*
  • AuditStore™ measurement verification*
  • Latest digital technology with a high resolution colour OLED display and back-lit keypad
  • Measure up to 140dB(A) and 143dB(C) Peak with a single measurement range
  • Real-time 1:1 Octave Band Filters*
  • NR & NC values & curves on screen*
  • Pause & Back Erase as standard
  • 4GB memory with the option of 32GB
  • Long battery life
  • Measure up to 170dB with the optional MV:200EH microphone system


Which instrument is best for you:

CR: 162A and CR:161A Class 2 and Class 1 Integrating Sound Level Meter
CR:162B and CR:161B Class 2 and Class 1 Integrating Sound Level Meter with Data Logging and VoiceTag audio recording
CR:162C and RC:161C Class 2 and Class 1 Integrating Sound Level Meter Data Logging, VoiceTag audio recording and Real-Time Octave Bands




  • Occupational and Industrial Hygiene Noise Evaluations
  • Noise Exposure Calculations
  • Hearing Protector Selection using HML or Octave Band Methods
  • UK Noise and Work Surveys
  • EU Physical Agents Directive Measurements
  • OSHA HC and PEL, MSHA and ACGIH Noise Exposure Assessments
  • Machinery Noise Tests
  • Noise Ordinance and Community Noise Assessment
  • General Noise Measurements

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