Line drawing of a paper document

Quick Start Guide

Line drawing of document

User Manual


Line drawing of a document


Device Compatibility


Masimo tests and validates a variety of smartphones to ensure compatibility. If you do not see your smartphone currently listed below, check back soon, as we frequently add support for new devices. Please contact Masimo Customer Support with any questions.



  • Android 6.0 (Marshmallow) and up
  • Display Size 4.7” and up


  • iOS 12 and up


Tablets are not compatible with Masimo SafetyNet Alert at this time.

Wi-Fi Connection 

The Home Medical Hub is only compatible with 2.4 GHz wireless networks.



Initial Setup

The Masimo SafetyNet Alert kit contains two (2) Masimo Sensors, one (1) Masimo Chip, (12) replacement tapes, one (1) Home Medical Hub, a User’s Guide, and Quick Start Instructions. The Masimo Halo App is required and available on the App Store for iOS devices and Google Play for Android devices.

Search for “Masimo Halo” on the App Store or Google Play.

Masimo Halo App Icon

Yes, a smartphone equipped with Bluetooth® is necessary to use Masimo SafetyNet Alert.

Masimo Halo is compatible with most Android and iOS devices.


  • Android 6.0 (Marshmallow) and up
  • Display Size 4.7” and up


  • iOS 12 and up

No, Masimo SafetyNet Alert is not currently configured for use with tablets.

Yes, a Wi-Fi connection is necessary for the initial setup of the system and during monitoring. The Home Medical Hub must remain connected to Wi-Fi during monitoring for the system to work properly. The Home Medical Hub is only compatible with 2.4 GHz wireless networks. 

No, a user is not required to designate any Emergency Contacts to use Masimo SafetyNet Alert, but it is recommended.

No, an Emergency Contact does not need to download the app. Notifications are sent by SMS.

Yes, a text message invitation is sent to each Emergency Contact designated in the app. The Emergency Contact must accept the invitation in order to become an Emergency Contact.  

In the Emergency Contact section of the app, each Emergency Contact carries a status label indicating “Accepted,” “Pending,” or “Unsubscribed.”

A user can designate up to 10 Emergency Contacts.

Yes, each Emergency Contact receiving text notifications for a particular user will receive the same information.

Yes, a text notification is sent to the Emergency Contact indicating that they are no longer an Emergency Contact.

Get more information on Emergency Contacts.

Daily Monitoring and Usage

Each sensor’s battery should last for up to 96 hours of continuous use. A flashing orange light indicates the sensor battery is low. A flashing red light indicates the sensor battery needs to be replaced.

When the sensor is not in use, remove the reusable chip and place the yellow adhesive label back on the chip holder portion of the sensor.

The Home Medical Hub must be within standard Bluetooth range of your sensor to receive data. This distance can vary depending on the use environment. Maintaining a direct line of sight between the sensor and Home Medical Hub is recommended.

If the sensor is out of range of the Home Medical Hub, the user will receive a banner message in the app. The Sensor Light Indicator (on the chip) will change from blue to green when it is no longer Bluetooth-paired with the system.

Yes, the app can run in the background and continue to receive data collected from the sensor. Do not close/quit the app during a monitoring session.

You can wash your hands while wearing the sensor. However, avoid submerging it in water. Do not wear the sensor in the shower or bath. You should replace the adhesive tape when it is dirty or no longer sticking.

Disconnect the Masimo Chip by pushing down on the tab to release and separate it from the sensor. Do not throw away the chip. Read the instructions on how to change sensors and re-install your chip.

The Masimo Sensor and adhesive tapes can be disposed of as part of standard household waste collection. The Masimo Chip can be reused and should not be discarded.

The Masimo Chip includes a light to indicate sensor and pairing status. Refer to the table below for a description of what the colors indicate. This information can also be found in the app under Main Menu > Devices > Sensor.

Color Description Next Steps
  • Masimo Chip ready to pair
  • Follow app instructions for pairing.
  • Successful pairing of Masimo Chip
  • Verify data is displayed on the app.
  • Sensor battery issue
  • Remove yellow label and any obstruction to the white portion of the chip holder.
  • Disconnect the chip from the sensor, wait 30 seconds, and reinsert the chip into the sensor.
  • Low sensor battery
  • Consider replacing sensor. Do not discard the chip.
  • Battery depleted or sensor needs to be replaced
  • Replace sensor, but do not discard the Masimo chip. If issue persists, replace the chip.
  • Contact Masimo Customer Support, or replace both the sensor and the chip.

During active monitoring, the Home Medical Hub will alarm if it loses Wi-Fi connection.

Yes, if the phone has a data connection, the system will be able to send text notifications to the cloud and to Emergency Contacts.

Masimo SafetyNet Alert does not support monitoring multiple individuals simultaneously. A complete system consisting of a chip, a sensor, a Home Medical Hub, and the app is required for each person. However, two or more systems will work simultaneously on the same wireless network.

For COVID-19 or OTHER, you have the option to change the default Oxygen Level Low Limits and Alert Time Delays. In the OPIOIDs option, the alert thresholds are fixed and cannot be modified by the user.

Location services is required during initial Wi-Fi setup and to reconnect a Home Medical Hub to Wi-Fi. It is recommended that location services remain active during monitoring.

The screen will display a “low pulse rate confidence” message and recommended actions.

Yes, monitoring history is available from the Main Menu.

Follow on-screen instructions for recommended actions. Clinical decisions are the responsibility of your doctor or other healthcare provider.

The system continues to monitor and send data to the cloud. If a text notification is triggered, the Home Medical Hub will send data to the cloud, which will trigger a text notification to your Emergency Contacts.

Yes, the system will continue to provide alarms on the phone and Home Medical Hub and continue to send text notifications to Emergency Contacts (if triggered).

You should use Masimo SafetyNet Alert for as long as your care provider recommends.

Masimo SafetyNet Alert is intended for individuals weighing >40 kg or <3 kg.

Low oxygen level alerts are triggered when oxygen levels fall below fixed thresholds. When these events occur, you are alerted with audible alarms that sound on the Home Medical Hub and your smartphone. If oxygen levels drop into Level 2 range, in addition to bedside and smartphone alarms, Emergency Contacts will receive a text message notification that your oxygen level is low. Some Alert Events are pre-configured based upon your Option selection. For COVID-19 and OTHER selections, the Alert Event can be customized by you or on the advice of your physician. 

Oxygen level Alarms Text Notifications
Level 1: CAUTION Audible alarms sound on smartphone and Home Medical Hub.  
Level 2: WARNING Audible alarms sound on smartphone and Home Medical Hub. Text message notification sent to Emergency Contacts.
Level 3: EMERGENCY Audible alarms sound on smartphone and Home Medical Hub. Text message notification sent to Emergency Contacts.

Data Protection and Security

Masimo SafetyNet Alert data is stored in the cloud and on the smartphone. Vital signs data reports are stored in the cloud. Any data entered manually is stored on your smartphone.

Yes, you can request to “download CSV” of your session data through the app, where you will receive an email containing a link to download your data to share with friends and family.  

Third-party vendors do not have access to your personal information or data.

No, a user’s location is not stored and cannot be tracked by Masimo.

Storage and Travel

Yes, when traveling, you can use your system on a different Wi-Fi network.


Symptom Potential Causes Next Steps
Vitals data not displayed or measurement values don’t look correct
  • Obstructed or misaligned sensor LED () and detector ().
  • Masimo Chip is not fully inserted or has not been properly paired.
  • Sensor is damaged.
  • Readjust alignment of the sensor LED () and detector (). Re-install the Masimo Chip and repeat the pairing process.
  • Click in the Masimo Chip and repeat pairing.
  • Review Safety Precautions for possible reasons for no readings.
  • Replace sensor.
  • Contact Masimo Customer Support.
Unable to pair your sensor to your mobile device
  • Chip is not fully inserted.
  • Bluetooth is not enabled on mobile device.
  • Sensor is damaged or sensor battery is depleted.
  • Ensure chip is inserted in the sensor and blinking green, or blinking blue if the sensor was previously paired.
  • Ensure Bluetooth is enabled on your mobile device.
  • Replace sensor if chip indicator light is orange or red.
  • For Android, ensure “Location Services” are enabled for the app.

If you have tried all of these steps but still have issues, please contact Masimo Customer Support.

Masimo SafetyNet Alert has obtained CE Marking. Not available in all markets. Check with your sales rep or customer service for product availability.