First Alert SC5 Battery Smart Smoke & CO Alarm vs First Alert SMCO410 Smoke Detector & CO Alarm

First Alert SC5 Battery Smart Smoke & CO Alarm is the more complete option versus First Alert SMCO410 Smoke Detector & CO Alarm in 2026, helped most by rating and integrations. It separates itself most clearly on rating and integrations, while still looking better on its broader overall balance. First Alert SMCO410 Smoke Detector & CO Alarm is still relevant if you care most about price, but First Alert SC5 Battery Smart Smoke & CO Alarm is the stronger recommendation overall. As a general recommendation, First Alert SC5 Battery Smart Smoke & CO Alarm comes out on top.