Many states (such as California) and municipalities (such as Phoenix) require smoke alarms with 10-year batteries. For these areas, we recommend the First Alert SM210 10-Year Sealed Battery Smoke ...

Types of smoke detectors Battery-powered units: These are entirely powered by their batteries, which can be either replaceable or permanent lithium batteries sealed inside. Hardwired units ...

Related: How to Clean Battery Corrosion Inside a Battery Case We've all been there—you're using the oven or broiler, and suddenly the smoke alarm goes off. It can be tempting to remove the ...

Many battery-operated alarms offer 10-year batteries like this Kidde 10-Year Worry-Free Sealed Battery Smoke Detector with wireless voice interconnect. “Hardwired alarms are connected to a power ...