Smoke alarms
Introducing Nest Protect
Get started
Explore features and settings
Safety and certifications
- Learn about carbon monoxide
- Carbon monoxide levels in your home
- When to replace your Nest Protect
- What to do if Nest Protect detects smoke in your home
- Learn about the different types of fires
- Symptoms of carbon monoxide poisoning
- What to do if carbon monoxide is detected
- Emergency evacuation plan
- Learn about Emergency Shutoff
- Why carbon monoxide (CO) alarms don't need to be installed near the floor
Fix a problem
- Error codes
- Why Protect’s green power light is on, but the app says the power is out
- Protect’s speaker or horn aren't verified by Sound Check or Safety Checkup
- Reset Nest Protect and erase all settings
- Troubleshoot when nothing happens after removing 1st gen Nest Protect's battery tab
- Troubleshoot wired Nest Protect power problems