CO/Smoke Combo Alarm w/Battery BackupCarbon Monoxide/Smoke Combo Alarms provide two important safety devices in a single unit. These alarms with Smart Hush activation include a voice warning system that announces "Fire", "Carbon Monoxide" and "Low Battery" and use ionization sensors to detect fire. They are easy to install, suitable for all living areas, and have a five-year limited warranty.Model Number: KN-COSM-IBUOM: EATechnical Data:Power Source: 120VAC with 9V Battery BackupSensor: ElectrochemicalAudio Alarm: 85dB at 10 ft.Size: 5 3/4” Diameter x 1 7/10” DepthWeight: 1 lbInterconnect: Up to 24 Kidde devices (18 initiating)Warranty: 5-year limited
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