Smoke alarms, or at least ionization-based alarms with a tiny amount of radioactive americium, are very simple devices. Inside the alarm, there’s a metal can – an ionization chamber – with ...

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?

The alarm and light shut off simultaneously when the sensor no longer detected any aerosol. The X-Sense SC01 lacks an ionization sensor and uses only a photoelectric sensor to detect smoke.

Generally, there are two primary types of smoke detectors: an ionization smoke detector and a photoelectric smoke detector. The International Fire Chiefs Association recommends having at least one ...

The "Smoke Detector Market by Detector Type (Photoelectric Smoke Detectors, Ionization, Dual-Sensor Smoke Detectors, Aspirating, Duct Smoke Detectors, Beam Detectors), Power Source (Wired Smoke ...