Respiration Rate

Acoustic Respiration Rate (RRa) provides noninvasive and continuous monitoring of respiration rate 

Rainbow Acoustic Sensor

  • > Adhesive Respiratory Acoustic Sensor (RAS) is applied to the neck, near the trachea, detecting the vibrations associated with respiration 
  • > Using acoustic signal processing that leverages Masimo Signal Extraction Technology® (SET®), the respiratory signal is separated and processed to display continuous respiration rate 

Rainbow Acoustic Sensor Application


Respiratory Acoustic Sensor (RAS)


RAS sensors


Upgradeable rainbow SET Technology Platform

Masimo rainbow SET is a noninvasive monitoring platform featuring Masimo SET® Measure-through Motion and Low Perfusion pulse oximetry with the option to measure multiple additional parameters.

  • > Oxygen Saturation (SpO2)
  • > Pulse Rate (PR)
  • > Perfusion Index (Pi)
  • > Total Hemoglobin (SpHb®)
  • > Oxygen Content (SpOC)
  • > Pleth Variability Index (PVi®)
  • > Methemoglobin (SpMet®)
  • > Carboxyhemoglobin (SpCO®)
  • > Acoustic Respiration Rate (RRa)



Product Information RRa Product Information

Caution: Federal (USA) law restricts this device to sale by or on the order of a physician. See instructions for use for full prescribing information, including indications, contraindications, warnings, and precautions.