Is your smoke detector beeping for no reason? Many factors can trigger a false alarm. Here's what to do to silence the device.

The best smoke detector will quickly alert you to a fire. Our picks, ... The First Alert SA3210 has photosensitive and ionization sensors, which can make it too sensitive.

Smoke detector false alerts happen, although our top picks like Kidde use sensors designed to cut down on them. If you hear a smoke alarm, check for the source of the smoke before calling 911.

Shopping for a smoke and carbon monoxide detector? Read about features, types, and other must-know details in our buying guide to make an informed choice.