Ionization smoke alarms use a battery and two metal plates, called electrodes, to create an electrical circuit. Ions are tiny ...

An electrical engineer explains how smoke detectors work, and how to reduce the chances of a false positive. ... but most of us don’t. It’s only when the smoke alarm goes off, ...

If you're looking for the best smart smoke detector, the Nest Protect can't be beat. But Nest's $119 device costs roughly the same as three of Roost's batteries.

ST. TAMMANY PARISH, La. — If a fire breaks out in your house, seconds matter. That's why most of us have smoke detectors to alert us. But did you know there are two different kinds? St. Tammany ...