Now that Nest has rolled out its second-gen smart thermostat, it looks like it’s gearing up to reveal its next project: an intelligent smoke detector dubbed Protect. Jessica Lessin, formerly of the Wall Street Journal, first broke word of the device and now AllThingsD is chiming in to confirm its existence. Specifics are slim, but it’s said Protect will connect to the outfit’s existing A/C hardware (presumably over Bluetooth), lending it long battery life since it won’t need a WiFi chip. Lessin notes that a subscription-based monitoring service and the ability to sense carbon monoxide have been considered, — For more information read the original article here.