Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, and Kidde Adapter Bundle

• Alarm: 2-IN-1 DETECTION- Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective detector. Alarm: HARDWIRED & 2 AA BATTERY BACKUP (Included)- Operates on 120V AC wiring (installed in the ceiling) with 2 AA alkaline batteries that provide battery backup coverage during power outages. Alarm: ENHANCED SENSING TECHNOLOGY- Reduces false smoke alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition, UL 2034 4th Edition, & FCC standards. Alarm: VOICE ALERT- Crystal-clear voice alerts will say "Fire!" when smoke is detected or "Warning! Carbon Monoxide!" if CO is detected, so you can react quickly. Adapter: Allows installation to an existing Kidde wiring harness Adapter: Install hardwired detectors quicker and easier Adapter: Allows a new Kidde detector to be interconnected with other Kidde smoke and combination detectors Adapter: Designed for use with interconnected hardwired alarms, see User Guide for compatibility