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2. ADT Inc. - Wikipedia

   en.wikipedia.org/wiki/ADT_Inc.

   ADT Inc. provides residential and small business electronic security, fire protection, and other related alarm monitoring services in the US. It was founded in 1874 as American District Telegraph and has undergone several acquisitions and mergers since then.

3. Fire alarm system - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_system

   Learn about the design, components, and standards of fire alarm systems that detect and alert occupants and emergency forces of fire-related emergencies. Find out how fire alarm systems use visual and audio signalization, power supplies, initiating devices, and notification appliances.

4. Tyco International - Wikipedia

   en.wikipedia.org/wiki/Tyco_International

   Tyco International was a security systems company that merged with Johnson Controls in 2016. It was founded in 1960 and acquired over 3,000 companies in various industries, such as fire protection, electronics, healthcare and telecommunications.

5. Fire protection - Wikipedia

   en.wikipedia.org/wiki/Fire_protection

   Fire protection is the study and practice of mitigating the unwanted effects of potentially destructive fires. It involves the classification, detection, suppression and investigation of fire and its related emergencies, as well as the design, application and maintenance of fire protection systems.

6. Fire alarm control panel - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_control_panel

   A fire alarm control panel (FACP) is the controlling component of a fire alarm system that receives, monitors, and controls information from devices designed to detect and report fires. Learn about the four basic types of FACPs: coded, conventional, addressable, and multiplex systems.

7. NFPA 72 - Wikipedia

   en.wikipedia.org/wiki/NFPA_72

   NFPA 72 is a standard for fire alarm systems and emergency communication systems in the US, published by the National Fire Protection Association every 3 years. It covers the application, installation, performance, inspection, testing, and maintenance of various components and systems, and includes annexes with explanatory material and guidelines.