These employ both technologies — ionization and photoelectric — in one device. All three types of smoke alarms come in battery, hard-wired and smart versions. Each offers different advantages.

Two examples of smoke detectors are photoelectric, top, and ionization. Photoelectric smoke detectors are hard-wired into a home and are better at sensing smoldering fires. Ionization smoke ...

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.

or choose a model that utilizes both ionization and photoelectric sensors. A silence or hush button so you can quickly silence false alarms caused by cooking smoke. There must be one smoke alarm ...

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.