Question 1

Which is better, Google Nest Protect (2nd Gen) or First Alert Onelink Safe & Sound?

Accepted Answer

Both products scored 8.5/10 in our testing — it's a tie. Choose based on which features matter most to you.

Question 2

Is the Google Nest Protect (2nd Gen) worth it over the First Alert Onelink Safe & Sound?

Accepted Answer

The Google Nest Protect (2nd Gen) scores 8.5/10 while the First Alert Onelink Safe & Sound scores 8.5/10. The Google Nest Protect (2nd Gen) is our "Best Overall" pick in the Best Smart Smoke Detectors 2026 category.

Google Nest Protect (2nd Gen) vs First Alert Onelink Safe & Sound: Which to Buy?