One call,
One company
for all your security needs!

Our mission is to be a Security Industry
Leader in performance and
customer satisfaction.

To continually establish new and improved industry standards, while providing a productive work environment that encourages our employees to be innovative and to excel.

Commercial Alarms Systems is a Security Systems Integrator dedicated to solving our clients’ security problems by providing reliable and cost effective Security Systems that may save lives, protect property and preserve our national security.

Read more


Thank you for being a CAS customer!
We appreciate your business and look forward to continuing to serve you.

For Questions, Comments or to talk to our Sales & Service Team: 630-832-2844

If you need more information feel free to reach out to us and we will get back to you as soon as possible.


120 King Street
Elk Grove Village, IL 60007



Business Office Hours

Mon - Fri: 7:00 am - 5:00 pm