The Kidde Smoke and Carbon Monoxide Alarm with Smart Features gives you the ability to manage your home's fire safety with confidence. If your Kidde smoke and carbon monoxide (CO) alarm senses smoke or CO, it will sound an 85-decibel alarm, call out Fire or Warning Carbon Monoxide, and send an alert to your smartphone, so you can contact emergency services if you're not at home. Thanks to the Kidde HomeSafe feature, these Wi-Fi-enabled smoke and CO alarms connect to the Kidde app for added smart functionality, like real-time info on the alarm and friends and family mobile notifications. Plus, this smart device is compatible with some smart home devices. It's also UL Listed, meaning that it has been comprehensively tested and designed to the exacting standards set by UL a global safety science leader for the latest in safety and reliability. Additionally, installing just one Kidde smart Smoke and CO detector designed to work together with your existing Kidde hardwired, AC interconnected smoke and combination Smoke and CO detectors (even if they aren't smart smoke detectors), to provide whole-home alarm activation, so when one Kidde smoke or carbon monoxide alarm sounds, they all sound and an alert is sent to your smartphone. The Kidde Smoke and Carbon Monoxide Alarm with Smart Features it's a smart smoke detector for a new level of control from the 1-most installed fire safety brand in North America and a trusted leader in fire safety for more than 100-years.