Ring Alarm Smoke & CO Listener vs Google Nest Protect
Head-to-head comparison based on trust scores, features, pricing, and real user feedback.
Our pick: Google Nest Protect (Trust Score 9.0 vs 8.5)
8.5
Excellent
Pros
- +Works with existing detectors
- +Adds smart alerts to existing detectors
- +Adds smart alerts to existing detectors
- +No replacement installation needed
- +No detector replacement needed
Cons
- −Requires Ring Alarm base station
- −Does not detect smoke directly
- −Does not detect smoke directly
- −Listens for sounds, does not detect smoke directly
- −Requires Ring Alarm base station
Don't buy if
- ⚠ This device listens for alarm sounds and can be triggered by other high-pitched noises in rare cases.
- ⚠ This is a listener only — it cannot detect fires independently and must always be paired with working smoke detectors.
- ⚠ This is a listener only — it cannot detect fires independently and must always be paired with working smoke detectors.
9.0
Excellent
Best Value
Pros
- +Voice alerts name danger type and location
- +Split-Spectrum dual sensing
- +Phone notifications and remote silence
- +Voice alerts with specific danger type
- +Automatic self-testing
Cons
- −Most expensive CO detector
- −Premium price per unit
- −Requires Google Home ecosystem
- −No Thread or Matter support
Don't buy if
- ⚠ The Nest Protect has a 10-year sealed battery lifespan; it cannot be battery-replaced and the entire unit must be discarded after 10 years.
- ⚠ The Nest Protect cannot be silenced from older Nest apps; ensure you use the Google Home app for full functionality.