First Alert SC5 Battery Smart Smoke & CO Alarm vs Google Nest Protect (Wired)

In 2026, the recommendation leans toward Google Nest Protect (Wired) over First Alert SC5 Battery Smart Smoke & CO Alarm, driven by rating, connectivity, and integrations. It builds its lead on rating, connectivity, and integrations, then backs it up with a stronger showing on sensors and built-in light. There is still a case for First Alert SC5 Battery Smart Smoke & CO Alarm, but mainly if price and warranty is what you value most. That makes Google Nest Protect (Wired) the clearer recommendation in 2026.