Google
Google Nest Protect 2nd Gen. Smoke/CO Alarm
Best smart safety solution for homeowners seeking remote monitoring and peace.
Ensure your home's safety with the Google Nest Protect 2nd Gen. Smoke/CO Alarm. This intelligent device provides early warnings for both smoke and carbon monoxide, sending instant alerts to your phone. Its advanced Split-Spectrum Sensor detects various fire types, while voice alerts clearly indicate the danger and its location. Easily silence false alarms remotely via the Nest App. Designed for convenience, it offers both battery power and a 120V hardwiring option, making installation flexible. A 5-year Extended Pro Warranty offers added peace of mind.
$148.39
Owner Satisfaction
4.5
/ 5
Category Rank
7
/ 55
#7 in Smoke & Carbon Monoxide Detectors
Price vs Category Average
+27%
Above average
Detection Technology
Photoelectric and Split-Spectrum Sensor
/ Photoelectric and Split-Spectrum Sensor
Who it's for
- Homeowners needing remote peace of mind while traveling
- Parents and seniors needing nighttime safety and guidance
- Safety-conscious buyers wanting long-term, comprehensive fire protection
Who should skip it
- Budget-conscious shoppers outfitting multiple rooms on a tight budget
- Users living in areas with unreliable internet connectivity
- DIY beginners uncomfortable with complex electrical wiring tasks
Performance breakdown
Detection Accuracy
Split-spectrum sensor technology distinguishes between steam and actual fire hazards effectively.
Smart Connectivity
Instant mobile alerts and remote silencing provide seamless home safety management.
Installation Versatility
Dual power options accommodate both hardwired setups and simple battery replacements.
User Interface
Clear voice alerts remove guesswork during high-stress emergency situations.
Build Quality
Robust construction ensures long-term reliability for critical home safety infrastructure.
Maintenance Convenience
Self-testing features minimize the need for manual checks and ladder climbing.
Key Specs
Detection Technology
Photoelectric and Split-Spectrum Sensor
Power Source
Battery Powered and Hardwired (120 V)
Sound Level
85 dB
Warranty
5 Years (Extended Pro Warranty)
Model Number
S3004PWBUS
Diameter
134.87 mm
Certifications
ETL Listed, UL Listed
Weight
725.75 grams
Features
- Sends alerts to your phone for immediate awareness.
- Detects fast and slow-burning fires effectively.
- Silence false alarms remotely via the Nest App.
- Provides clear voice alerts specifying hazard and location.
- Offers flexible power options: battery or 120V hardwired.
- Includes a 5-year Extended Pro Warranty.
- Features a helpful Night Light function.
- Equipped with reliable WiFi connectivity.
What customers say
Consumers view the Google Nest Protect 2nd Gen as a superior safety device, highly valuing its thoughtful user experience and advanced functionality. Key praise centers on the intuitive design and clear voice alerts that specify the emergency type and location. The integrated path light adds practical nighttime utility. While installation is generally simple, the premium price is a frequent concern regarding overall value. Despite minor reports of intermittent Wi-Fi issues, the device offers significant peace of mind through reliable self-testing and seamless remote management via the Google Home ecosystem. It is considered a high-quality investment for those prioritizing smart home integration and robust monitoring.
Know before you buy
Yes, the Nest Protect is available in both battery-powered and hardwired versions. If you choose the battery-powered model, it can be mounted anywhere without the need for existing electrical wiring.
The device uses a Split-Spectrum Sensor that utilizes two wavelengths of light to detect smoke from both fast-burning and slow-smoldering fires. This technology is specifically designed to reduce false alarms caused by common household occurrences like steam or cooking.
The Nest Protect will continue to function as a standard smoke and carbon monoxide alarm even without a WiFi connection. It will still sound its 85 dB siren and provide voice alerts locally, though you will not receive push notifications on your phone until the connection is restored.
Yes, you can use the Nest App to silence the alarm remotely. This feature, called App Silence, allows you to quiet the device from your smartphone as long as you are on the same WiFi network as the detector.
The Night Light is a built-in LED that glows white when you walk underneath the detector in the dark. It is designed to provide a soft, helpful path of light for late-night trips to the kitchen or bathroom without needing to turn on bright overhead lights.
Like most smoke and carbon monoxide detectors, the Nest Protect has a limited lifespan due to the degradation of its sensors. It is designed to last for 10 years, after which the device will notify you that it is time to be replaced.
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