The Google Nest Protect Wireless (2nd generation) is a smoke alarm that thinks, speaks, and sends notifications to your phone. Nest Protect has been redesigned from the ground up. It features a Split-Spectrum Sensor, tests itself automatically, and has a lifespan of up to ten years. Nest Protect is also the first home alarm that lets you silence the alarm with your smartphone without any additional hardware. It tells you what the problem is and can even send a notification to your phone. If Nest Protect detects smoke anywhere, it gives you a spoken alert, and when one smoke alarm is detected, they all speak. This way, everyone in the house knows what's happening.

• Split-spectrum sensor for detecting fast-burning and slow-smouldering fires
• Carbon monoxide sensor that lasts up to ten years
• Spoken warnings and communication with different colors
• Bright light ring for better visibility in emergencies