Kidde Smoke Detector, Hardwired with AA Battery Backup, 20SAR, 1 Pack

Price: $34.45
(as of Oct 22, 2026 07:28:22 UTC – Details)


Help protect your home and family with the Kidde 20SAR Smoke Detector with Hardwired AC Operation and AA Battery Backup. Designed to help provide peace of mind, this alarm detects smoke over 25% faster*, sounding a loud 85-decibel alert with a red LED light. The unit connects directly to 120V AC power and includes two AA alkaline batteries for backup operation, helping maintain continuous detection during power outages. Advanced sensing technology helps reduce false alarms from everyday cooking or steam while ensuring quick, accurate detection when smoke is present. With interconnect capability, multiple Kidde alarms can sound together, helping ensure everyone in the home is alerted to potential hazards.*** Tested to meet UL 217 10th Edition and FCC standards, this smoke detector supports reliable, code-compliant safety. Backed by a 10-year limited warranty** from date of purchase, the 20SAR is suitable for homeowners, property managers, and professionals seeking long-term, dependable fire safety assurance. *29% faster average smoke detection based on internal testing of smoldering wood fires for Kidde 9th Edition vs. leading competitor 8th Edition products. **10-year limited warranty on alarm. Not a battery performance claim. ***Different models offer different interconnection options and requirements. Check the User Guide for more info.
SMOKE DETECTION: Model 20SAR detects smoke over 25% faster*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
HARDWIRED WITH AA BATTERY BACKUP: Connects directly to 120V AC power and includes two AA batteries for backup operation to help ensure continuous detection during power outages; includes a 10-year limited warranty** 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
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
Customers find the smoke detector easy to install and appreciate its interconnectability feature that works great. However, they report mixed experiences with reliability, with some units working well while others fail within a year. Moreover, the noise level is problematic, with customers noting it chirps at 2 AM and has intermittent beeping issues. Additionally, the battery life receives mixed feedback – while the 10-year battery feature is appreciated, some units drain batteries every 2-3 months. The value for money and home safety aspects also draw mixed reactions, with some finding it a great value while others say it’s not worth the cost.