
Smoke and CO Listener
Place Alarm Smoke and CO Listeners¹ near each of your existing smoke and carbon monoxide detectors to get alerts whenever they sound their sirens.
Requires Ring Alarm or Ring Alarm Pro, sold separately.
This device does not detect fire, smoke or carbon monoxide. For best performance, use with detectors that are 10 years old or less and comply with all applicable standards.
Key Features
- Real-time notifications from the Ring app (subscription required, sold separately)
- Place within 6 inches of existing smoke or CO alarms (for optimal performance, install within 3 inches)
- (Optional) 24/7 Professional Monitoring
2with asubscription, sold separately
Top Articles

Testing Ring Alarm Smoke and CO Listener
Learn how to test and properly replace the battery for your Smoke & CO Listener.
Setting Up Ring Smoke and CO Listener in the Ring App
Get step-by-step instructions on how to setup your Ring Smoke & CO Listener , where best to place it, and how to test it to make sure it’s working properly.
Troubleshooting Ring Alarm Smoke & CO Listener
Learn how to fix connection issues, improve detection, factory reset, and remove Smoke and CO Listener.
Tech Specs
Size | Diameter: 2.95 inches (7.5 cm.) Height: 1.06 inches (2.7 cm.) |
Power | 3V Lithium Battery (included), non-rechargeable |
Battery Life | Max 3 Years |
Connectivity | Z-Wave (up to 250-foot range to Base Station) |
Operating Conditions | 32°F to 120°F (0°C to 49°C) |
Warranty |
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