In 1874 a messaging service operating as the America District Telegraph Company was formed. With the introduction of Call Boxes, ADT's messaging service evolved into an interactive communication system used between night watchmen, police, and fire officials. From the beginning, ADT has been an industry leader in security technology. Today, ADT is America's #1 provider of monitored electronic home security services.

ADT installs more than 100 security systems per hour, that's more than one ADT monitored system installed each minute. Their 5 million plus satisfied customers include 9 out of 10 Fortune 500 Companies, half of the top-50 U.S. national and regional bank holding companies, 80% of the world's largest retailers, and more than 300 international airports. Even the U.S. government relies on ADT to help protect high-level facilities and court houses. ADT not only helps protect property, we help protect your peace of mind, and even help save lives.

With more than 130 years in the business, you can count on ADT's experience and expertise to help protect your home and family. Click here to choose the ADT Monitored Home Security System that best suits your needs, or call us with any questions.

The chime feature lets me know when the kids are coming and going. This is something that I now depend on.   -Brenda
I called on Tuesday and they were able to get someone out to my house on Wednesday (next day).   -Gary
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$99 Customer Installation Charge. 36-Month Monitoring Agreement required at $36.99 per month ($1,331.64). 24-Month Monitoring Agreement required at $36.99 ($887.76) for California, including Quality Service Plan (QSP). Form of payment must be by credit card or electronic charge to your checking or savings account. Offer applies to homeowners only. Local permit fees may be required. Satisfactory credit history required. Termination Fee applies. Certain restrictions may apply. Offer valid for new ADT Authorized Premier Provider customers only and not on purchases from ADT LLC. Other rate plans available. Cannot be combined with any other offer.