Ionization smoke alarms use a battery and two metal plates, called electrodes, to create an electrical circuit. Ions are tiny, electrically charged particles that flow through the circuit and ...

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.

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