SMOKE DETECTION: Model 20SDR detects smoke over 25% faster*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes AA BATTERY OPERATION & WARRANTY: Powered by two AA batteries (included) for easy, no-wiring setup; Backed by 10-year limited warranty** that starts from date of purchase REDUCED FALSE ALARMS: Uses advanced 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 TEST & HUSH BUTTON: Allows quick testing of alarm functionality to help ensure the unit is operating properly; temporarily silences false alarms that may occur without disabling the detector for continued safety monitoring 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