Kidde Smart Smoke & CO Detector with Ring, AA Battery, RGCUDR-RW

Double the Detection: Alerts you to both smoke and carbon monoxide (CO)
Real-Time Ring App Notifications: Home or away, get smoke, CO or low battery warnings (no subscription required)
Over 25% faster smoke detection (based on internal testing vs a leading competitor)
Optional Ring subscription (sold separately) with 24/7 smoke and CO monitoring for $5/month
No Wiring Needed: Operates on 2-AA alkaline batteries (included) for simple use throughout your home
Whole Home Smart Connectivity: Get mobile alerts for every Kidde alarm in your home through wire-free interconnectivity — when one alarm sounds, they all do. (Check the user guide for more information)
Reduced Nuisance Alarms: Enhanced sensing technology reduces false alarms often caused by cooking when compared to prior Kidde generations of smoke alarms
Get Alerted to Carbon Monoxide Sooner: Help protect your family and pets with low-level CO mobile alerts
Connect with Alexa: Get notifications from Alexa-enabled devices
Comprehensively tested & certified to meet requirements of UL 217 and FCC standards