Stay prepared with the most reliable smoke detectors for fire and carbon monoxide detection -- tested and recommended by our ...

It’s widely known that a smoke detector is a good ionizing radiation source, as they contain a small amount of americium-241, a side product of nuclear reactors. But what about other sources?

They work differently in order to detect smoke. Ionization detectors use a very small amount of radioactive material inside of an ionization chamber with electrically charged plates. When smoke ...

When smoke enters the detector, it disrupts the flow of current and activates the alarm. Ionization smoke alarms work best on fires with active flames, also called “flaming fires,” McKelvey says.

it’s everything you need to build an Internet-connected smoke alarm. Smoke alarms, or at least ionization-based alarms with a tiny amount of radioactive americium, are very simple devices.

A press release from the National Fire Protection Association: QUINCY, MASS. — Four of every ten home fire deaths resulted from fires with no smoke alarms in 2003-2006, according to a new ...

The best smoke detector can provide an important first line of defense from fire. We recently put the top smoke detectors to the test. See which ones performed best.