Onyx3 9591

Fingertip Pulse Oximeter

  • image
  • image

Onyx3 9591

Fingertip Pulse Oximeter

The new Nonin Onyx3 Finger Pulse Oximeter includes respiratory rate readings. It features proven PureSAT® technology to quickly and accurately capture SpO2, pulse rate, and respiratory rate measurements—even on patients where low perfusion is a challenge.

*This is currently a limited release product and is not available in the USA. Check for availability in your area.


Multicolor Display

Features a bright multicolor LCD so you can view SpO2, pulse rate, and respiration rate easily


Bluetooth® Low Energy

Wireless connectivity via Bluetooth Low Energy for longer battery life and lower operating costs


Respiratory Rate

Our tradition of innovation continues with the introduction of our newest parameter: respiratory rate

Auto On/Off

Provides up to 2,000 spot checks on (2) AAA batteries

Easy to Use

Clinician-facing, easy-to-read, multicolor display


Nonin CorrectCheck gives feedback when the finger is not placed properly in the device

Auto Adjust

Automatically adjusts to each patient from pediatric to adult


Weighs only two ounces, can be taken anywhere

Signal Quality Indicator

Provides a quick assessment of patient pulse quality

Wide Fit Range

Quickly accommodates fingers, thumbs, and toes with digit thicknesses: 8 mm to 25.4 mm (0.3 to 1.0 in.)


  • Description


  • Carrying Case


  • Fingertip Lanyard


  • Fingertip Retractable Lanyard


Show More

Product Specifications and Resources

View Product Support

Purchase Info