|Ionization Sensor – may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms.|
|Photoelectric Sensor – may detect visible particles (associated with smoldering fires) sooner than ionization alarms.|
|Interconnect – Interconnects with up to 24 Kidde devices on one wiring network of which 18 can be initiating.|
|Battery Backup (9V battery included) – Provides continuous protection even during power outages.|
|Tamper Resistant – Deters from tampering or theft.|
|Hush® Feature – Temporarily silences nuisance alarms.|
|Red LED – Flashes every 30-40 seconds to indicate that the smoke alarm is operating properly.|
|Test/Reset Button – Tests smoke alarm circuitry and horn.