First Alert Precision Detection 10-year battery smoke and carbon monoxide alarm 2-pack featuring advanced 8th generation sensing technology. This dual-sensor alarm combines electrochemical and photoelectric detection to provide comprehensive protection against both smoke and carbon monoxide hazards while reducing false alarms from cooking.

The slim profile design is half the depth of standard alarms and includes a 10-year sealed lithium battery that eliminates the need for battery replacements throughout the unit's lifespan. Advanced Precision Detection technology meets UL 217 8th Edition standards and helps distinguish between harmless cooking smoke and real fire emergencies. Each alarm delivers 85 dB sound alerts at 10 feet and includes test/silence functionality.

Features include end-of-life warning notifications, easy installation with no wiring required, and compliance with both UL 217 and UL 2034 safety standards. The 8th generation technology provides enhanced detection of smoke from modern synthetic materials commonly found in today's homes.