Google has discontinued its smart smoke alarm and partnered with First Alert on a new $129 detector that will work with current Nest Protect alarms.

Google Nest announced two major changes to its Google Home lineup of smart devices. First, it will end sales of its Nest Protect smoke detector, which is featured on our list of recommended smoke detectors as one of the smartest fire alarms available.

Nest has just announced that it’s not building the Nest Protect Smart Smoke and CO Alarm alongside a smart lock. Here’s all you need to know.