Quick Reference Guides

Masimo - Thumbnail of System

Quick Reference Guide

Masimo - Thumbnail of Mobile App

Quick Reference Guide

Masimo - Thumbnail of Radius PPG™ & Radius T°™

Quick Reference Guide

Detailed Directions for Use

Masimo - Thumbnail of Radius PPG Sensor

Directions for Use

Masimo - Thumbnail of Sensor Adhesive Tapes

Directions for Use

Masimo - Thumbnail of System

Directions for Use


  • Oxygen saturation (SpO2)
  • Respiration rate
  • Pulse rate
  • Perfusion index
  • Pleth variability index
  • Temperature, and other health indicators, can also be manually entered into the app

Up to 100 feet maximum distance, when there is a direct visual line of sight between the sensor and your phone.

Yes, the app can run in the background and continue to receive data collected from the sensor.

Each sensor lasts for four days with continuous use. The sensor chip will flash an orange light when the sensor has low battery. A flashing red light indicates the sensor battery is out of power and no longer collecting data.

You can wash your hands while wearing the sensor. However, avoid submerging it in water, including wearing it in the shower or bath. Replace the adhesive tape when it is dirty or when the adhesive is no longer sticking.

Refer to instructions from your healthcare provider for recommended monitoring and when to collect data with the sensor on. Be sure to remove the sensor before taking a shower or bath. Always remove the chip before taking off the sensor.

The reusable chip features a light to indicate battery status and whether it is paired with your phone:

Color Description Next Steps
  • Successful insertion of chip into sensor
  • Follow app instructions for pairing
  • Successful pairing of chip to your phone and app
  • Make sure your sensor is properly attached to your finger and hand, so that your phone can receive data
  • Yellow battery seal tab has not been removed to activate the battery
  • Battery is obstructed
  • Low battery
  • Consider replacing sensor, do not discard reusable chip
  • Battery has run out of power
  • Hardware or sensor failure, chip blinking board failure code
  • Replace sensor, do not discard reusable chip. If the red light continues after replacing the sensor, replace the chip
  • Contact Masimo Technical Support or replace sensor and chip

The chip is reusable: Do not throw it away when changing sensors. For instructions on how to change sensors and re-install your chip, go here.

The sensors with wrist strap and adhesive tape can all be disposed of in your standard waste collection.

If you need additional sensors or adhesive tapes, contact the healthcare provider who provided you with your original kit.

Replacement chips are not available at this time. You will need a new kit from the healthcare provider who provided you with your original kit.

Refer to the directions provided by your healthcare provider. It is likely you can dispose of the kit when you’ve finished your home monitoring, but some healthcare providers may request that the chip be returned.

Yes, you can share your health data with family members. To do so, you can invite them to view your data on the Masimo SafetyNet App home screen. See the Quick Reference Guide.

Your data can be accessed by healthcare professionals who have added you to a CareProgram via email or text invitation, as well as individuals you’ve granted access via the Masimo SafetyNet App.

Masimo follows HIPAA regulations for data privacy. HIPAA is a federal law that sets a national standard to protect medical records and other personal health information. Data is secured using encryption between the sensor and your mobile phone, as well as between the phone and the Masimo SafetyNet cloud.