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2. Here's Everything You Need to Know About Smoke Alarms - AOL

   www.aol.com/heres-everything-know-smoke-alarms...

   If you've got a hardwired smoke alarm system, try flipping the switch on the breaker to see if the beeping ceases. Andia. Step by Step Instructions: 3 Easy Solutions.

3. Smoke detector - Wikipedia

   en.wikipedia.org/wiki/Smoke_detector

   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 150 millimetres (6 in) in diameter and 25 millimetres (1 in) thick, but shape and size vary. Smoke can be detected either optically (photoelectric) or by physical ...

4. 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. They may include smoke detectors, heat detectors, and manual fire alarm activation devices ...

5. First Alert - Wikipedia

   en.wikipedia.org/wiki/First_Alert

   On September 4, 1992, BRK recalled all hardwired smoke alarms under the series 1839I and 2839I due to testing programs determining that corrosion could form on the alarm horn's electrical contacts, causing the piezo to fail to make any noise. [6] In May 2006, First Alert combination smoke alarms were recalled due to draining batteries rapidly. [7]

6. Fire alarm control panel - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_control_panel

   A conventional fire alarm control panel employs one or more electrical signalling circuits (each a pair of wires), connected to initiating devices (usually smoke detectors, heat detectors, duct detectors, manual pull stations, and sometimes flame detectors) wired in parallel. These sensors are designed to dramatically decrease the circuit ...

7. Manual fire alarm activation - Wikipedia

   en.wikipedia.org/wiki/Manual_fire_alarm_activation

   Manual fire alarm activation. An activated manual call point in Japan. Telephone jacks are visible beneath the open cover. Manual fire alarm activation is the process of triggering a fire alarm through a call point, pull station, or other device. This usually causes the alarm to sound the evacuation signal for the relevant building or zone.