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Ring White Alarm Smoke & Carbon Monoxide Listener-4SS1S8-0EN0

Model #: 4SS1S8-0EN0
At a Glance

Place Alarm Smoke and CO Listeners near each of your existing smoke and carbon monoxide detectors to get alerts whenever they sound their sirens. Requires the Ring Alarm Security Kit.

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Get to know this product.

Stay Alert of Smoke and Carbon Monoxide

The Alarm Smoke and CO Listener sends you real-time mobile notifications alerts whenever it hears sirens from smoke or CO alarms in your home. Simply place the Listener near your existing smoke or CO alarm, connect it to your Ring Alarm Base Station and protect your home.

  • Requires the Ring Alarm Security Kit
  • Sends notifications to your phone and tablet
  • Place within 6 inches of existing smoke or CO alarms (for optimal performance, install within 3 inches)
  • Optional 24/7 Professional Monitoring (requires Ring Protect Plus Plan, sold separately)

Size and Color

Dimensions2.95 in. Diameter; 1.06 in. Height (7.5 cm. Diameter; 2.7 cm. Height)
Available ColorsWhite

Power and Connectivity

Power3V Lithium Battery Included
Battery LifeMax 3 Years
ConnectivityZ-Wave (250-foot range to Base Station)


Setup RequirementsRing Alarm Security Kit (sold separately) and an existing Smoke/CO Alarm

Misc. Specs

Manufacturer Warranty1 Year
WarningProposition 65 Warning for California Residents