Ring Smoke and CO Listener Alarm - 4SC2S9-0EN0 4SC2S9-0EN0 (2-Pack)

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.Product Highlights:Requires the Ring Alarm Security KitSends notifications to your phone and tabletPlace 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)Product Specifications:Size and ColorDimensions - 2.95 in. Diameter; 1.06 in. Height (7.5 cm. Diameter; 2.7 cm. Height)Available Colors - WhitePower and ConnectivityPower - 3V Lithium Battery IncludedBattery Life - Max 3 YearsConnectivity - Z-Wave (250-foot range to Base Station)Installation Setup Requirements - Ring Alarm Security Kit (sold separately) and an existing Smoke/CO AlarmGeneralWarranty - 1 year limited warranty