First Alert ATOM 10-Year Smoke & Fire Alarm with Lithium Powercell

First Alert ATOM Smoke & Fire Alarm provides 10 years of maximum protection with advanced photoelectric technology. Features a 10-year lithium powercell, eliminating the need for battery replacements. Includes an advanced smoke entry system for early detection. Designed for easy installation on walls or ceilings. Loud 85dB alarm ensures you are alerted in case of smoke or fire. Compact and modern design with a user-friendly test button. Backed by a 10-year limited warranty for peace of mind.