Timeline Express Announcements

The Guardian Medical Monitoring division is established to help seniors with personal help buttons, medication management, and wander management devices. The division was sold in 2022.

Automatic Alarm and Certified Alarm, both owned by Milton Pierce’s sons Richard and Douglas, merge with Guardian Alarm.

The Guardian Armored Security division is established to provide armored car and cash processing services. This division was sold in 2007.

Guardian Alarm is ranked the 14th largest security company in the United States and has continued to be top-ranked.

The Guardian Guard Services division is established to provide physical security throughout Michigan and Ohio.

During the Great Depression and at the age of 15, Milton Pierce started a burglar alarm company in his neighborhood. A few years later, he expanded and purchased Guardian Alarm in Detroit, Michigan.