Kidde has become the best-known name in the world of smart smoke detectors—a relatively low bar given how few people know the brand of their smoke detector. Still, you'll find Kidde recommended by reviewers and customers across the internet with surprising enthusiasm, which has only increased since the brand started collaborating with Ring and Amazon, making it an easy add-on to Alexa-powered smart homes.

Until now, if you wanted a Kidde smart smoke alarm connected to your other devices, one that would send you alerts by Ring app, you could only choose a hardwired model. Anyone who wanted something battery-powered from Kidde along the lines of the now-discontinued Google Nest Protect had to skip the smarts.

At the CES trade show in January, Kidde announced its first battery-only smart smoke alarm, once again in collaboration with Ring. The Kidde Ring Smart Smoke + CO Alarm has been available for preorder since the announcement, but as of today is fully available to buy.