




Opioid Halo™
First and only FDA-authorized device to alert you in the event of an opioid overdose
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Opioid Halo™
Opioids are powerful painkillers. But they can also have serious side effects, even when taking a prescribed dose.*
- Monitors physiological marker data to identify the risk of opioid overdose, which may cause slowed or stopped breathing
- Powered by Masimo SET® pulse oximetry, which is trusted by 9 of the top 10 U.S. hospitals**
- Provides visual and audible alarms when signs of opioid-induced respiratory depression are detected
- Sends escalating alerts to the person and their emergency contacts, followed by an automated wellness call that may lead to EMS being dispatched
- Includes an advanced pattern recognition algorithm
- No prescription required
Opioid Halo Includes:

Intuitive Mobile App
Displays monitoring status and sends alerts to the Home Medical Hub and emergency contacts

Home Medical Hub
Connects wirelessly to provide visual and audible alerts and collects data from the Masimo Sensor and sends to the secure Opioid Halo Cloud

Tetherless Sensor‡
Uses advanced pattern recognition algorithm to identify the risk of opioid overdose
What’s in the Box
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Masimo Sensors
2 easy-to-apply, disposable sensors measure oxygen level and pulse rate (each single-use sensor lasts up to 96 hours in typical continuous usage‖)
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Masimo Halo App
Displays monitoring status. Cloud sends alerts to the Home Medical Hub and mobile device. Compatible with most mobile devices (mobile device not included).
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Replacement Tapes
12 replacement tapes are provided for sensor application
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Masimo Chip
Reusable chip snaps into the sensor and communicates with the Home Medical Hub
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Home Medical Hub
Collects data from Masimo Sensor. Sends data to the smartphone app.
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Power Adapter
USB power adapter
Frequently Asked Questions
Frequently Asked Questions
The Opioid Halo System is indicated for the noninvasive continuous monitoring of individuals 15 years and older for the identification of when they may be experiencing a substance-induced impairment of oxygenation (e.g., opioid-induced respiratory depression (OIRD) caused by oral or injectable opioids).
Yes, we offer complimentary expeditied services on all US orders.
You can return or exchange new, unopened product purchased directly from Masimo within 30 days of the original purchase date. Please read our return policy for more details.
The sensor is water resistant (IP22 rating) – it can be worn in the shower but should not be submerged.
Opioid Halo is compatible with Android and iOS devices.
Search for 'Masimo Halo' in the iOS App Store or Google Play.
Visit MyMasimo.com for more details on how to use Opioid Halo and for answers to any further questions you may have.
Experience the Power of Masimo
Experience the Power of Masimo





- **Masimo SET® is the primary pulse oximetry at 9 of 10 top U.S. hospitals as ranked in the 2022-23 U.S. News and World Report Best Hospitals Honor Roll, available at: https://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.
- †Opioid Halo continuously monitors certain physiological parameters that are indicative of opioid-induced respiratory depression – a sign of opioid overdose – in order to alert users and their emergency contacts so that action can be taken to avoid adverse consequences of an overdose.
- ‡Disposable. Each sensor lasts up to 96 hours in typical continuous usage.
- §Emergency contacts must agree to receive alerts.
- ‖Not rechargeable.