Commercial and Residential Sales, Service and Installation
With over 40 years in business, MDK Alarm Systems is an innovative company dedicated to your custom security needs at an affordable price. We are a locally owned and operated company providing sales, service, monitoring, and installation to homes and businesses in St. Clair County and surrounding areas throughought the state of Michigan. We specialize in residential and commercial security systems, fire systems, camera systems, access-control systems, and most other low-voltage systems. Call or contact us today to speak with our security specialists who can get you a complete estimate based on your needs.


Forward Thinking DesignServices Customized for You
We set ourselves apart from the rest by offering scalable designs that can be integrated with your current technology to keep your investment safe and running in top condition now, and well into the future.

Flawless InstallationWith Fast Turnarounds
A dedicated, professional team and the use of advanced tools and technologies allow us to work quickly to diagnose and resolve issues at the root of the problem.
Call us today to make an appointment to consult with a specialist— at no charge.
