ADT started life in 1867 when Edward A. Calahan, inventor of the stock ticker tape, created the Gold and Stock Telegraph Company and developed a messenger system to deliver instructions to and from the stock exchange. Three years later, company president Elisha Andrews awoke to a burglar in his home, which inspired him to develop a telegraph-based alert system that connected neighborhood homes to a central monitoring station. The idea immediately caught on aand over 50 home alert companies popped up throughout New York City almost immediately. In 1874, Calahan consolidated them into American District Telegraph.

ADT has four monitored security packages to choose from: basic, basic wireless, ADT Pulse, and ADT Pulse + Video. Their monthly fees are on the high side, from $36.99 to $58.99. They require a 36-month minimum contract. Additionally, in the event of early contract termination, ADT may ask the client to pay 70% of the monthly charges due for the balance of the first 36-months. They do offer a 6-month money back guarantee and a 90-day limited warranty for their products, but all in all a rather stringent pricing and contract policy.


ADT Security Services is a well-respected name in the home security market throughout the US and Canada. It’s also the largest provider in these areas. Each ADT security system is professionally installed for free and carries a 6-month money-back guarantee. Customers can bring their own equipment or lease equipment from ADT for home security as well as medical response, disaster protection and home automation.

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