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2. System Sensor - Wikipedia

   en.wikipedia.org/wiki/System_Sensor

   System Sensor is an American ... and replaced the jumpers for the horn tone with DIP switches. ... In the 1990’s System Sensor introduced a line of smoke detectors ...

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):

4. Aspirating smoke detector - Wikipedia

   en.wikipedia.org/wiki/Aspirating_smoke_detector

   An aspirating smoke detector (ASD) is a system used in active fire protection, consisting of a central detection unit which draws air through a network of pipes to detect smoke. [1] The sampling chamber is based on a nephelometer that detects the presence of smoke particles suspended in air by detecting the light scattered by them in the chamber.

5. Fire alarm system - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_system

   A fire alarm system is a building system designed to detect, alert occupants, and alert emergency forces of the presence of fire, smoke, carbon monoxide, or other fire-related emergencies. Fire alarm systems are required in most commercial buildings.

6. Fire damper - Wikipedia

   en.wikipedia.org/wiki/Fire_damper

   Fire dampers can also close following receipt of an electrical signal from a fire alarm system utilising detectors remote from the damper, indicating the sensing of heat or smoke in the building occupied spaces or in the HVAC duct system. Regulations and fire test regimes vary from one country to another, which can result in different designs ...

7. Smoke detector - Wikipedia

   en.wikipedia.org/wiki/Smoke_detector

   Smoke detector mounted on a ceiling Knowing this sound could save your life - it means replace the battery. 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 ...