First Alert SA305CN Smoke Alarm with Long Life Lithium Battery

Help keep your home and family safe with this First Alert SA305CN Smoke Alarm with Long Life Lithium Battery. The battery effectively provides up to 10 years of continuous monitoring, while the ionization sensor is especially effective at detecting smoke from flaming fires such as paper and grease fires. It also features a loud 85-decibel alarm and includes a convenient single test/silence button for fast muting in the event of nuisance alarms from cooking smoke or shower steam. The battery-powered alarm doesn't require wiring to install and continues to monitor your home even if there's a power failure. Plus, it ships in frustration-free packaging so you can install it immediately.