FireX Hardwire Smoke and Carbon Monoxide Combination Detector with AA Battery Backup, Voice Alarm, and Ionization Sensor

Hardwired 120-Volt Interconnected Combination Carbon Monoxide and Smoke Alarm provide 2 important safety devices in a single unit. The alarm includes a voice warning system that announces Fire, Carbon Monoxide, Low Battery or Smart Hush Activation. The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger or if your battery is in need of replacement.|120-Volt with battery backup|Alarm/voice message warning system-warning, carbon monoxide or fire|Permanent independent carbon monoxide and smoke alarm sensors|Peak level-alerts user when the unit has detected CO concentrations of 100ppm or higher|Smoke and carbon monoxide detector utilizes ionization and photoelectric sensors to detect fire hazards and sounds an 85 dB alarm when a hazard is detected|UL/CSFM reference KN-COSM-IBA