Kidde Smoke & Carbon Monoxide Detector, Hardwired, Interconnect Combination Smoke & CO Alarm with Battery Backup, Voice Alert

Fire & CO Detector in 1 unit with alert modes, LED lights, & voice alarm, that states, "Fire! Fire!", "Warning! Carbon Monoxide!", or "Low Battery!" Ionization sensing technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire Protects during a power failure - combo smoke and CO detector operates on a 120VAC power source with 2-AA battery backup Test-Hush Feature - silences the unit for approximately 9 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling UL Certified, 10-year limited warranty Meets safety standards set by Underwriters Laboratories (UL) and interconnects with other KN-COSM-IBA models 120V AC, All Kidde brand hard wired smoke alarms are interconnectable with the KN-COSM-IBA