2-IN-1 DETECTION: Detects both smoke and carbon monoxide with advanced sensing technology engineered for over 25% faster smoke detection*; features an 85-decibel alarm with red LED light for clear visual and audible warnings; suitable for homes HARDWIRED WITH 10-YEAR BATTERY BACKUP: Model 30CUA10 operates on 120V AC power with a built-in 10-year battery backup; helps save up to $40 over the alarm’s life in battery replacements; has a 10-year limited warranty** starting from date of purchase TESTED FOR RELIABILITY: Tested to meet UL 217 10th Edition, UL 2034 5th Edition, and FCC standards for performance and safety; enhanced sensing technology helps reduce false alarms by distinguishing real smoke from everyday cooking or steam INTERCONNECT CAPABILITY: Connects with other Kidde alarms so that when one detects danger, all interconnected alarms sound together; improves whole-home safety by ensuring everyone is alerted promptly*** 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