Sonitrol Tri-County / Chicagoland North Verified Electronic Security

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Integrated Security Systems
At Sonitrol Tri-County and Sonitrol Chicagoland North, we offer single source, modular, innovative security solutions that include intrusion detection, access control, security cameras and fire and temperature monitoring into a one, intuitive security system. We meet your needs today while allowing effortless expansion as your needs change in the future.

Sonitrol Tri-County and Sonitrol Chicagoland North have been serving communities for over 40 years. Our success is based in our unique ability to provide custom designed, expertly installed and locally monitored security services unlike anyone else.  We are so confident in our suite of protection systems and exceptional service that we put it in writing.  Our guaranteed Commitment to Service addresses:

  • Performance
  • Satisfaction
  • Emergency Service

Call or email us today to arrange a free security assessment for your business – our team of professionals are here to serve you.

A Heritage of Technical Innovation
The company known today for detecting burglars had its roots in pest control of a different sort in the late 1950s.  Robert Baxter, of Anderson, Indiana, installed microphones within the walls of a building to listen for termites and pinpoint their location. Baxter invented other sound-related devices, too. On June 16, 1960, he incorporated “Sonitrol”, from the words sound and control, to manufacture and market his innovations.

Law enforcement legacy
In 1963, Baxter met Al Cronk, a local police officer who owned an alarm company. Cronk was frustrated with systems that seemed to let the perpetrators get away. He hired Baxter, the inventor, to develop new ideas for the alarm company. Baxter responded with the audio sensor, and Sonitrol was born as a security company.

Success spreads
Today, Sonitrol provides tailored local service in approximately 180 cities throughout the United States and Canada. Sonitrol is the third largest commercial security company in North America—and the leader in verified electronic security. 157,000 apprehensions and counting!


    Call today: 1-888-APPREHEND (1-888-277-7343)

    Farmington Hills
    36528 Grand River Suite A-2
    Farmington Hills, MI, 48335
    Tel: (248) 473-9400
    Fax: (248) 473-9480

    Flint
    3907 S. Saginaw Street
    Flint, MI, 48507
    Tel: (810) 744-4390
    Fax: (810) 744-0122

    3215 Arnold Lane
    Northbrook, IL, 60062
    Tel: (847) 205-0670
    Fax: (847) 205-0677