The First Alert Precision Detection Smoke Alarm features a 10-year sealed battery for hassle-free installation and maintenance. Its advanced sensing technology minimizes false alarms from cooking while ensuring prompt fire alerts. Designed for easy mounting on walls or ceilings, this battery-operated alarm includes a single button for testing and silencing. An end-of-life signal notifies you when replacement is needed, and an optional locking feature helps prevent tampering. Trust this reliable device to deliver continuous protection and peace of mind throughout your home.