Catch leaks or freezing temps early and stop damage before it starts. 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. | Ring | | Flood & Freeze Sensor (Newest Model) – Catch leaks and freezing temps, On Amazon Sidewalk, no hub | White | Best Buy