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The Kidde KN-COSM-B battery-operated carbon monoxide and smoke alarm combines two important safety devices in one unit. This 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 from dangerous smoke or carbon monoxide, or if the battery needs replacement. The device runs on three AA batteries, protect you and your family even during a power voltage alarm uses ionization sensing technology smoke alarm. The ionization detection alarms may detect invisible fire particles (associated with fire flame) before photoelectric alarms. Photoelectric sensor alarms can
