Google Nest Protect Wi-Fi Smoke & Carbon Monoxide Alarm (Battery) (S3000BWEF)

For something as important as fire safety, you want a smoke alarm you can trust and rely on. That's what you get with the battery-operated Google Nest Protect. This advanced smart device can distinguish between levels of urgency in smoke and CO levels, and sends you alerts on your smartphone immediately upon detection so you can take action right away.