According to the company, the story began on April 5, 1874, with a nighttime break-in. After the event, Edward Callahan created a telegraph-based "call box" to signal for assistance to a central office. He quickly connected 50 other homes in the neighbourhood, essentially creating the first residential security system network.

American District Telegraph was incorporated shortly thereafter on Aug. 14, 1874, in Baltimore.

Now, a century and a half later, ADT still makes helping to protect and connect what matters most the centerpiece of its work. ADT will celebrate that legacy with a series of events to honour the achievement of 150 years in operation.

Employee appreciation events

Today and beyond, ADT teams across the country are holding gatherings to celebrate the company’s most important asset: the employees. These celebrations are also an opportunity for ADT teams to reflect on its rich history of innovation. 

The Birthday Party Project

This month, the company not only celebrates its achievements but will also be helping children in need have happier birthdays. ADT is partnering with The Birthday Party Project, a nonprofit organisation based in Dallas that works to bring joy to unhoused kids and youth by throwing them unforgettable birthday celebrations. Through the ADT Safe Places programme, the company is sponsoring the group's work for the entire month of August.

Additionally, ADT teams at four locations across the U.S. recently packed more than 800 goodie bags for the organisation, which will be distributed at parties throughout the month. ADT volunteers will also participate in a gift-wrapping event on Aug. 14 at The Birthday Party Project headquarters in Dallas, and at one of the group's birthday parties on Aug. 16.

Ringing the NYSE opening bell

In addition, yesterday ten outstanding ADT employees joined Jim DeVries, ADT Chairman, President and CEO, and Jeff Likosar, President, Corporate Development and Transformation, and Chief Financial Officer, at the New York Stock Exchange to ring the opening bell in honour of the company's milestone celebration.