Ring - Smoke & CO Listener (Newest Model) – On Amazon Sidewalk, no base station needed, Pro Monitoring (sold separately) - White

Detects the sound of your existing smoke and CO alarms and alerts you instantly. Ring Sensors are built to break free from traditional systems with no need for hubs or the limited reach of WiFi. On Amazon Sidewalk, these devices stay connected for reliable protection day and night.1 Add more devices anytime to expand your coverage as your home security needs grow.