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  2. Duncanville, Texas - Wikipedia

    en.wikipedia.org/wiki/Duncanville,_Texas

    Duncanville is a city in southwestern Dallas County, Texas, United States. Duncanville's population was 40,706 at the 2020 census . [ 4 ] The city is part of the Best Southwest area, which includes Duncanville, Cedar Hill , DeSoto , and Lancaster .

  3. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Some alarm systems serve a single purpose of burglary protection; combination systems provide fire and intrusion protection. Intrusion-alarm systems are combined with closed-circuit television surveillance (CCTV) systems to record intruders' activities and interface to access control systems for electrically locked doors. There are many types ...

  4. Duncanville Air Force Station - Wikipedia

    en.wikipedia.org/wiki/Duncanville_Air_Force_Station

    Duncanville Air Force Station was one of twenty-eight stations built as part of the second segment of the permanent Air Defense Command network. Prompted by the start of the Korean War, on 11 July 1950, the Secretary of the Air Force asked the Secretary of Defense for approval to expedite construction of the second segment of the permanent network.

  5. NFPA 72 - Wikipedia

    en.wikipedia.org/wiki/NFPA_72

    The NFPA 72 (National Fire Alarm and Signaling Code) is a standard published by the National Fire Protection Association every 3 years for installation of fire alarm systems and emergency communication systems in the United States.

  6. Duncanville - Wikipedia

    en.wikipedia.org/wiki/Duncanville

    Duncanville, Texas, USA; a city Duncanville Independent School District. Duncanville High School; Duncanville Air Force Station; Other uses. Duncanville, an ...

  7. Duncanville, Alabama - Wikipedia

    en.wikipedia.org/wiki/Duncanville,_Alabama

    Duncanville is an unincorporated community in Tuscaloosa County, Alabama, United States. Duncanville is located along U.S. Route 82 , 12.5 miles (20.1 km) southeast of Tuscaloosa . Duncanville has a post office with ZIP code 35456, which opened on August 22, 1898.

  8. Fire alarm control panel - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_control_panel

    A fire alarm control panel (FACP), fire alarm control unit (FACU), fire indicator panel (FIP), or simply fire alarm panel is the controlling component of a fire alarm system. The panel receives information from devices designed to detect and report fires, monitors their operational integrity, and provides for automatic control of equipment, and ...

  9. Manual fire alarm activation - Wikipedia

    en.wikipedia.org/wiki/Manual_fire_alarm_activation

    In its simplest form, the user activates the alarm by pulling the handle down, which completes a circuit and locks the handle in the activated position, sending an alarm to the fire alarm control panel. After operation, most fire alarm pull stations must be restored to the ready position using a special tool or key for the panel to be reset.

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