Google has discontinued producing the second-generation Nest Protect ... slot into the Google Home ecosystem, Google recommends the new SC5 Smart Smoke & Carbon Monoxide Alarm from First Alert.

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Fadell is the electric CEO of Nest, which makes an Internet connected thermostat and smoke/carbon monoxide detector. Prior to founding Nest, he led Apple's iPod group, and worked on the iPhone.

If you’re the owner of a Nest Learning Thermostat ... the Nest Protect smoke detector and the Nest X Yale Lock, thus withdrawing as a manufacturer in those key smart home categories.