From 1867-Today:

The History of ADT

The #1 security provider in America has a remarkable history, which began with a stock ticker. Check out all the changes ADT has gone through over the years.


Gold and stock

Telegraph company

Edward Calahan invents the stock ticker and forms the Gold and Stock Telegraph Company. This opens the door for New York brokerage firms to get up-to-the-minute information from the stock exchange floor. The Gold and Stock Telegraph Company also develops a messenger system that sends instructions to and from the stock exchange floor.


The Break-In And
New Security System

The president of the Gold and Stock Telegraph Company, Elisha Andrews, wakes up and finds a burglar in his home. Calahan creates a telegraph-based alert system for Andrews' home and eventually connects 50 of Andrews' neighbors to a central station where all the alert boxes are monitored. This system quickly expands throughout New York City.

Old Robber


American District Telegraph is formed

Calahan helps create the American District Telegraph (ADT) Company, which consolidates over 50 local alert system companies in the New York area.



Old time firetruck

Police and Fire Alerts

ADT expands its messenger and alarm services to include standardized police and fire alerts, in addition to messenger services for calling doctors and carriages.


Rise of the Roundsmen


ADT develops a service that sends messenger watchmen, also known as "roundsmen," around neighborhoods. The roundsmen's job is to check in at signal boxes at designated times, which indicates to ADT headquarters that neighborhoods are secure.


Western Union Buys ADT

The President of Western Union, Colonel R.C. Clowry, buys a controlling interest in 80 Direct Messenger Companies, including the original New York-based ADT. He consolidates these businesses under the name American District Telegraph. Clowry sees the long-term benefit of security services and the eventual decline of messenger services, so he separates the two within the company and makes ADT the security services branch of the business.


Purchased by AT&T

In an effort to expand its communication network, AT&T buys Western Union and its subsidiary, ADT.


AT&T Monopoly

Just five years after the Western Union acquisition, the Justice Department declares AT&T a monopoly and forces it to sell its interests in Western Union, ADT, and other subsidiary companies.


Technological expansion

ADT continues to expand and create new technology for burglar and fire alarm systems.


ADT Monopoly

ADT controls over 80% of the security business in the U.S. and is ruled a monopoly by the Justice Department. As a result, ADT is forced to adopt a uniform national price list and service offerings.


ADT Goes Public

ADT becomes a publicly traded company on the New York Stock Exchange, which prompts expansion overseas.


The central

Old Call Center

ADT continues to revolutionize the security industry with new technology and creates the first automated "Central Station" call center.



ADT introduces microcomputer based security systems, which replace the old telephone network based call boxes.




ADT continues to transform by introducing Unimode fire systems, Safewatch residential systems, and the central station monitoring, which is the focus of ADT today.

Number of Customers



Renamed ADT Security

Lord Ashcroft, the owner of the Bermuda-based Hawley Group, Ltd., buys Crime Control, Inc., the 4th largest security company in the U.S. Later that year, he buys ADT, which merges with Crime Control Inc. Ashcroft renames the company ADT Security Systems, Inc.


One Million Customers

ADT adds 180,000 new customers and reaches the 1 million customer mark after 120 years in business.


Purchased by Tyco

Tyco International Ltd. acquires ADT. Lord Ashcroft sells most of his company stock and joins the Tyco board of directors.


Broadview Becomes ADT

ADT pays $2 billion to acquire Broadview Security (formerly Brinks), the 2nd largest security company in the U.S.


ADT Goes Public

ADT Goes Public

Tyco International introduces ADT as an independent, publicly traded company.


America's #1 Security Provider

ADT continues to be the #1 security provider in America, offering business and residential security monitoring services to over 6 million customers across the U.S.


ADT Pulse Interactive Solutions Services, which help you manage your home environment and family lifestyle, requires the purchase and/or activation of an ADT alarm system with monitored burglary service and a compatible computer, cell phone or PDA with Internet and email access. These ADT Pulse Interactive Solutions Services do not cover the operation or maintenance of any household equipment/systems that are connected to the ADT Pulse Interactive Solutions Services/Equipment. All ADT Pulse Interactive Solutions Services are not available with the various levels of ADT Pulse Interactive Solutions Services. All ADT Pulse Interactive Solutions Services may not be available in all geographic areas. You may be required to pay additional charges to purchase equipment required to utilize the ADT Pulse Interactive Solutions Services features you desire.

Installation starts at $199. Burglary, Fire, Carbon Monoxide and Medical Alert monitoring requires purchase and/or activation of an ADT security system with monitored Burglary, Fire, Carbon Monoxide and Medical Alert devices. Fire, Carbon Monoxide and Medical Alert services are an additional charge. Quality Service Plan (QSP) is ADT's Extended Limited Warranty. 36-month monitoring contract required from $52.99 per month, ($1,907.64), including Quality Service Plan (QSP). Additional charges may apply in areas that require guard response service for municipal alarm verification. Prices subject to change. Prices may vary by market. Some insurance companies offer disounts on Homeowner's Insurance. Please consult your insurance company. Local permit fees may be required. Satisfactory credit history required. Additional monitoring fees required for some services. Photos are for illustrative purposes only and may not reflect the exact product/service actually provided.

$99 Customer Installation Charge. 36-Month Monitoring Agreement required at $27.99 per month ($1,007.64). 24-Month Monitoring Agreement required at $27.99 per month ($671.76) for California. Form of payment must be by credit card or electronic charge to your checking or savings account. Offer applies to homeowners only. Offer valid for new ADT Authorized Premier Provider customers only and not on purchases from ADT LLC. Cannot be combined with any other offer. The $27.99 Offer does not include Quality Service Plan (QSP), ADT?s Extended Limited Warranty. Licenses: AL-17-1104, AK-35221, AZ-ROC217517, AR-2008-0014, CA-ACO6320, CT-ELC.0193944-L5, DE-07-212, FL-EC13003427, DC-602513000006, GA-LVA205395, HI-CT30946, ID-ELE-SC-39312, IL-127.001042, IN-City of Indianapolis: LAC-000156, IA-AC-0036, KY-City of Louisville: 483, LA-F1082, LA-F1914, LA-F1915, ME-LM50017382, MD-107-1626, MA-1355C, MI-3601205773, MN-TS01807, MS-15007958, MO-City of St. Louis: CC354, St. Louis County: 79853, MT-247, NE-14451, NV-68518, City of Las Vegas: 3000002944, NJ-34BF00021800, NM-353366, NY-Licensed by the N.Y.S. Dept. of State UID#12000317691, #12000286451, NC-1622-CSA, OH-53891446, City of Cincinnati: AC86, OK-1048, OR-170997, Pennsylvania Home Improvement Contractor Registration Number: PA22999, RI-3582, SC-BAC5630, SD-1025-7001-ET, TN-C1520, TX-B13734, ACR-3492, UT-6422596-6501, VT-ES-2382, VA-115120, WA-602588694/PROTEYH934RS, WV-042433, WI-City of Milwaukee: PAS-0002790, WY-LV-G-21499. 3750 Priority Way South Dr. Suite 200 Indianapolis, IN 46240 ©2014 Defender Security is a high quality professional review site. The customer reviews yo use here are the result of direct feedback from Protect Your Home customers. We do not pay customers for reviews. If they participate, reviewers do have the opportunity to enter various contests to be randomly selected as a winner. We do not reward reviewers based on whether their written analysis is positive or negative. Rather, we publish full and complete reviews from individuals with no alterations. We do select which reviews will be published excluding reviews due to language, inappropriate or irrelevant content.

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