Timeline Express Announcements

Guardian Alarm acquires Executive Security Consultants, a locally owned and operated security company based in Columbus, OH. Established in 1988, ESC brings along a trusted presence in the Columbus community that Guardian Alarm will help expand for years to come.

Guardian Alarm acquires Sievers Security, an independently-owned security company based in Cleveland, OH. This acquisition expands Guardian Alarm’s footprint in Ohio by continuing to be the largest security company in the Midwest.

Guardian Alarm launches Virtual Guardian, a new 24/7 video monitoring service creating real-time remote security solutions with the latest technology, such as live video-voice communication.

The Pierce family sells Guardian Alarm to Certares L.P. & BlackRock, Inc. after 87 years in business.

The Guardian Alarm family proudly celebrates our 85th Anniversary and we look forward to continuing the legacy of innovation and industry-leading standards.

The Guardian Alarm division expands further into Ohio through the purchase of Complete Protection from Cincinnati Bell.

The Guardian Alarm founder, Milton Pierce, passes away at the age of 95. A true pioneer, Pierce set the example with his motto: “Give the customer good service. Take good care of them and they will take care of you.”

Guardian Alarm reaches its 75th year in business and has grown to become one of the largest independently-owned security companies in the United States.

The Guardian Alarm division expands into Florida through acquisitions of several security companies.