A D T Security in Sandton, Johannesburg


1 charles cres, Alexandra , Sandton , Johannesburg




South Africa

086 121 2400

ADT Security, through its people, will be the leader in its chosen markets by delivering unsurpassed customer ...View more

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About us

ADT Security is as old as the security industry itself. In fact, ADT invented home security. The story began in the USA in 1874, when the American District Telegraph Company, A -D -T, was formed through the amalgamation of several small telegraph delivery companies. At the outset, ADT employed messengers who were sent to clients to deliver telegraphs or collect ones that needed despatching. Later, call boxes were invented, and placed in clients’ offices and homes. Now there was interactivity between ADT and its clients and when an electric signal was sent, an ADT messenger responded. Though the technology has developed a thousandfold since, the principle remains the same. A client in need sends a signal - and ADT responds. By 1910, messengers began to double as watchmen and guards, and clients’ signal timers were monitored at ADT central offices. Thus did the security industry begin.


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