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2. Smoke detector - Wikipedia

   en.wikipedia.org/wiki/Smoke_detector

   In a conventional system, smoke detectors are typically wired together in each zone and a single fire alarm control panel usually monitors several zones which can be arranged to correspond to different areas of a building. [56] In the event of a fire, the control panel can identify which zone or zones contain the detector or detectors in alarm.

3. Fire alarm system - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_system

   Electromagnetic fire door holders may also be hard-wired into the fire panel, radio-controlled, triggered by radio waves from a central controller connected to a fire panel, or acoustic, which learns the sound of the fire alarm and releases the door upon hearing this exact sound. [20]

4. 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]

5. How to reset a smoke alarm that won’t stop beeping - AOL

   www.aol.com/reset-smoke-alarm-won-t-205535790.html

   $79.99 at Amazon . If your home is set up for a hardwired smoke alarm system, the First Alert Hardwired Smoke and Carbon Monoxide Detector will do two jobs at once.

6. Building automation - Wikipedia

   en.wikipedia.org/wiki/Building_automation

   Fire alarm panels and their related smoke alarm systems are usually hard-wired to override building automation. For example: if the smoke alarm is activated, all the outside air dampers close to prevent air coming into the building, and an exhaust system can isolate the blaze.

7. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_alarm

   Remote alarm systems are used to connect the control unit to a predetermined monitor of some sort, and they are available in many different configurations. Advanced systems connect to a central station or first responder (e.g. police/fire/medical) via a direct phone wire, a cellular network, a radio network, or an IP path. In the case of a dual ...