Ring Alarm Smoke and CO Listener Product Details Place Alarm Smoke and CO Listeners near each of your existing smoke and carbon monoxide detectors to get alerts whenever they sound their sirens.Please note: Requires Ring Alarm or Ring Alarm Pro Smoke and carbon monoxide monitoring is not available at a business or commercially zoned address. Learn more here. Features Stay alert of smoke and carbon monoxide The Alarm Smoke and CO Listener sends you real-time mobile notifications whenever it hears sirens from the nearby existing smoke or CO alarms in your home. Requires the Ring Alarm or Ring Alarm Pro 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). Subscribe to an eligible Ring Home Plan, sold separately, and add Alarm Professional Monitoring1, to choose to receive a call from the monitoring center when the Smoke and CO Sensor is triggered and request emergency assistance if needed.Smoke and carbon monoxide monitoring is not available at a business or commercially zoned address.
