Guardian Alarm Acquires Controllor Security Systems
January 9, 2026
Guardian Alarm, a Southfield, Michigan-based full-service security company, has acquired Controllor Security Systems, a long-established Metro Detroit security provider serving residential and commercial customers for more than 40 years. The acquisition expands Guardian Alarm's presence in Michigan and brings Controllor's local customers access to Guardian's broader portfolio of monitoring, video surveillance, access control and life-safety services.
- Buyers
- Guardian Alarm
- Targets
- Controllor Security Systems
- Industry
- Professional Services
- Location
- Michigan, United States
- Transaction Type
- Buyout
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