Smoke Alarms and Detectors

Smoke detectors are one of the most important safety devices you can have in your building. Smoke detectors provide early warning and enable emergency action in the event of a fire. They are inexpensive, easy to install, unobtrusive, and require very little maintenance, and no building should be without them. A smoke detector (sometimes called a "smoke alarm") is a safety device that detects airborne smoke and issues an audible alarm, thereby alerting nearby people to the danger of fire. Most smoke detectors work either by optical detection or by ionization, but some of them use both detection methods to increase sensitivity to smoke.