This bundle includes two Kidde smoke and carbon monoxide detectors to provide enhanced protection for your home. The first is a 10-year battery-powered model that requires no wiring, while the second is a hardwired model with 10-year battery backup. Both feature dual smoke and CO detection in a single device using advanced electrochemical sensors to reduce false alarms. The alarms clearly announce "Fire!" or "Warning Carbon Monoxide!" in crystal-clear voice alerts when hazards are detected. With 3 LED lights to indicate status and loud 85-decibel alarms, these detectors ensure your family receives urgent notification to exit the home quickly. These Kidde alarms undergo comprehensive UL testing to meet the latest safety standards. The convenient 5-inch design blends seamlessly into any living space. With easy twist-and-click mounting, the battery-powered unit requires no wiring while the hardwired alarm connects directly to your home's AC power for continuous operation. Both models include self-testing features and 10-year limited warranties, never requiring battery changes for a decade. With both portable and permanently installed options, this bundle provides complete smoke and carbon monoxide monitoring to maximize in-home safety.