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2. Smoke detector - Wikipedia

   en.wikipedia.org/wiki/Smoke_detector

   Smoke detector mounted on a ceiling. A smoke detector is a device that senses smoke, typically as an indicator of fire.Smoke detectors/Alarms are usually housed in plastic enclosures, typically shaped like a disk about 125 millimetres (5 in) in diameter and 25 millimetres (1 in) thick, but shape and size vary.

3. EN 54 - Wikipedia

   en.wikipedia.org/wiki/EN_54

   For smoke detectors according to EN 54-7 and fire detectors with smoke sensor (parts 12, 20 and 30 of EN 54) the test fires TF2, TF3, TF4 and TF5 are used. The EN 54-20 defines the following test fires with reduced fuel quantity for aspirating smoke detectors with enhanced or very high sensitivity (class A or B): TF2A and TF2B; TF3A and TF3B

4. The Best Place to Put Your Smoke Detector (Plus 3 Spots ... - AOL

   www.aol.com/lifestyle/best-place-put-smoke...

   Replace smoke detectors at least every 10 years: Don't place your life in the hands of an outdated smoke alarm. For the most part, you can plan on replacing your smoke detector at least every 10 ...

5. Smoke control - Wikipedia

   en.wikipedia.org/wiki/Smoke_control

   Requirements for the maintenance of smoke control systems fall outside this standard. [4] References This page was last edited on 4 April 2023, at 15:22 (UTC). Text ...

6. Ionization chamber - Wikipedia

   en.wikipedia.org/wiki/Ionization_chamber

   The ionization chamber has found wide and beneficial use in smoke detectors. In an ionisation type smoke detector, ambient air is allowed to freely enter the ionization chamber. The chamber contains a small amount of americium-241, which is an emitter of alpha particles which produce a constant ion current. If smoke enters the detector, it ...

7. Hotel and Motel Fire Safety Act of 1990 - Wikipedia

   en.wikipedia.org/wiki/Hotel_and_Motel_Fire...

   Hotel and Motel Fire Safety Act of 1990; Long title: An Act to amend the Federal Fire Prevention and Control Act of 1974 to allow for the development and issuance of guidelines concerning the use and installation of automatic sprinkler systems and smoke detectors in places of public accommodation affecting commerce, and for other purposes.

8. Gaseous ionization detector - Wikipedia

   en.wikipedia.org/wiki/Gaseous_ionization_detector

   Ionization-type smoke detectors are gaseous ionization detectors in widespread use. A small source of radioactive americium is placed so that it maintains a current between two plates that effectively form an ionisation chamber. If smoke gets between the plates where ionization is taking place, the ionized gas can be neutralized leading to a ...

9. Glossary of firefighting equipment - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firefighting...

   Smoke detector 1. part of a fire alarm system that detects and signals presence of smoke 2. self-contained household device for same purpose as (1) but with its own noisemaking device. Smoke ejector Powerful fan for moving large amounts of air and smoke as part of ventilation task while fighting fire