First Alert SC5 Hardwire Smart Smoke & CO Alarm vs X-Sense WiFi Smoke & CO Detector

X-Sense WiFi Smoke & CO Detector edges out First Alert SC5 Hardwire Smart Smoke & CO Alarm in 2026, led by price, rating, and screen. The main reason it wins is price, rating, and screen, and built-in light strengthens that case. Pick First Alert SC5 Hardwire Smart Smoke & CO Alarm only when warranty, integrations, and steam check is the deciding factor for your setup. As a general recommendation, X-Sense WiFi Smoke & CO Detector comes out on top.