Guardian Alarm Company, Southfield, Mich., acquired Alert Alarm, Royal Oak, Mich., and Allstate Alarm Systems Inc., Detroit. The acquisitions brought more than $70,000 in RMR to Guardian.

Guardian Alarm has offices in Michigan, Ohio, Florida and Ontario, Canada. The company, which owns a UL-Listed monitoring center, offers CCTV, fire/life-safety solutions, intrusion alarms, video badge/identification and biometrics for high-level access control to a 60 percent commercial, 40 percent residential client base.