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

10-year sealed battery dual-sensor smoke alarm provides ultimate protection by combining ionization and photoelectric technologies to detect both fast-flaming and slow-smoldering fires. Precision Detection advanced sensing helps reduce nuisance alarms from cooking while still delivering early warning of real fire emergencies. Sealed lithium power cell removes the need for battery changes or low-battery chirps, and a single test/silence button simplifies operation and maintenance.