SMOKE DETECTION WITH VOICE ALERTS: Model 20SA10-V features advanced sensing technology for over 25% faster smoke detection*; sounds a loud 85-decibel alarm with red LED light and voice alerts announce “Fire” for clear warnings HARDWIRED WITH 10-YEAR BATTERY BACKUP: Operates on 120V AC with a built-in 10-year battery; saves up to $40 over the alarm’s life in battery replacements; includes a 10-year limited warranty** starting from date of purchase REDUCED FALSE ALARMS: Uses enhanced sensing technology that helps distinguish between real smoke and everyday cooking or steam ; helps reduce false alarms while maintaining quick, accurate detection when smoke is present TESTED FOR SAFETY & PERFORMANCE: Rigorously tested to meet UL 217 10th Edition and FCC standards; designed to help ensure reliable performance and compliance with recognized safety requirements INTERCONNECT CAPABILITY: Connects with other Kidde alarms so when one detects danger, all connected units sound together; helps ensure everyone in the home is alerted to potential hazards*** BUILT FOR HOMEOWNERS AND PROFESSIONALS: Designed for those who prioritize dependable, code-compliant detection; supports safety goals for homeowners, property managers, contractors, and professionals seeking long-term home safety assurance