ADT Inc. history, company profile (overview) and corporate video

       ADT Inc. is a provider of security systems headquartered in Boca Raton, Florida, United States. It provides security, fire protection, alert systems, solar panels, and other related alarm monitoring services.


       ADT’s history began in April 1874 when, after a nighttime break-in, Edward Callahan, the founder of American District Telegraph (ADT), created a telegraph-based “call-box” to signal for assistance to a central office. He also connected 50 other homes in the neighborhood, creating the first residential security system network.

       In August 1874, American District Telegraph was incorporated in Baltimore.

       In 1901, ADT was incorporated into Western Union.

       In 1909, Western Union and ADT came under the control of American Telephone & Telegraph Company (AT&T).

       In 1987, Hawley Goodall acquired ADT and the security company Crime Control Inc. As a result of the acquisitions, Hawley Goodall became one of the largest security services companies in the United States and changed its name to ADT Limited.

       In 1997, ADT was acquired by Tyco International.

       In 2010, Tyco acquired Broadview Security and merged it with ADT.

       In 2012, ADT became an independent public company and was listed on the New York Stock Exchange (NYSE), after Tyco was split into three companies.

       In 2014, Reliance Protectron Security Services was acquired.

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       In 2019, Telus Corp. acquired ADT’s Canadian assets.

       In 2016, ADT was acquired by Apollo Global Management and was merged with the home security firm Protection 1.

       In 2021, Sunpro Solar was acquired and rebranded as ADT Solar.


    • Home Security;
    • Smart Home Automation;
    • Security Cameras;
    • Business Security;
    • Commercial Security;
    • Health & Senior Safety;
    • Identity Theft Protection.

       With more than 17,000 employees in over 200 locations throughout the U.S., ADT Inc. is considered one of the Largest Public Companies in the World, according to Forbes.

    *Information from,, and

    **Video published on YouTube by “ADT



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