Ring Alarm Smoke & CO Listener for Existing Detectors

With a Ring Protect subscription (sold separately), the Ring Alarm Smoke and CO Listener notifies your smartphone when your existing smoke and carbon monoxide alarms go off. Please note: this listener itself does not detect fire, smoke, or carbon monoxide. For best results, pair it with detectors that are 10 years old or less and meet all applicable standards. Setup is easy and takes just minutes—no tools or professional installation required. It works with a Ring Alarm security system (sold separately). A Ring Protect subscription also lets you manage this listener and other Ring products through the Ring app. The device has a maximum battery life of three years, and the batteries are replaceable.