First Alert Battery-Powered Ionization/Photoelectric Dual Sensor Smoke Detector 1 Pk

The SM310 10-Year Sealed Battery Dual Sensor Smoke Alarm meets new industry standards featuring First Alert's advanced sensing technology and dual smoke sensors to provide reliable protection from fast flaming and slow smoldering fires. First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.