subsidiary of tyco fire & security ltd nyse tyc industry security products and services integration and installation founded 2012 with roots going back to 1874 american district telegraph adt headquarters boca raton florida u.s. key people mark vandover president parent tyco international website www.tycois.com tyco integrated security a business unit of tyco international is a company specializing in electronic security products installation and services . the company s principal place of business in the us is boca raton florida ; and mississauga ontario in canada with over 10 000 employees and nearly 200 offices throughout north america . contents 1 corporate history 2 executive leadership 3 references 4 external links corporate history edit tyco integrated security has roots in the beginning of the north american commercial security industry . in 1874 57 district telegraph delivery companies affiliated and became american district telegraph which became known as adt . in july 1997 tyco merged by reverse takeover with a smaller publicly traded security services company named adt limited . upon consummation of the merger tyco international ltd. of massachusetts became a wholly owned subsidiary of adt limited and simultaneously adt changed its name to tyco international ltd. retaining the former tyco stock symbol tyc . a new subsidiary named adt security services was also formed out of the merger . 1 in september 2011 tyco international ltd. directors announced plans to split into three companies . 2 3 in september of the following year they completed the separation of the company into flow control business pentair north america s residential security business adt and its international fire and security business tyco international ltd. 4 adt business solutions became tyco integrated security a business unit of tyco international ltd. 5 6 as a business unit of tyco international ltd. the company provides security solutions for the commercial retail industrial and governmental markets in the us and canada . adt residential continues as a separate company focused on security solutions for residential and small business customers in the us . tyco international ltd. retains use of the adt brand for security installation and services outside of north america . executive leadership edit mark vandover president references edit adt and tyco plan to merge in 5.4 billion stock swap . march 18 1997 . retrieved 29 august 2013 . tyco to split itself into three companies . news & record . associated press . 2011 09 19 . retrieved 2011 09 19 . tyco shareholders approve three way break up . reuters . sep 17 2012 . retrieved 29 august 2013 . tyco completes separation process . reuters . october 1 2012 . retrieved 29 august 2013 . adt commercial changes name to tyco integrated security . cepro . april 2 2012 . retrieved 30 august 2013 . faq s . tyco integrated security . retrieved 30 august 2013 . external links edit tyco integrated security official website tyco international ltd. website retrieved from https en.wikipedia.org w index.php title tyco integrated security & oldid 705401416 categories tyco internationalcompanies based in boca raton floridasecurity companies navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 17 february 2016 at 07 55 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view