REX security systems offer strategies for protection against theft, intruders and property damage. We provide the planning, hardware, power source and installation of high-tech temperature and motion sensors, glass and door break detection and notification systems.

Our access control systems monitor, regulate and restrict admittance to all types of facilities. Variable parameters control access by people, time and locations, featuring keypad and smart card data capture. We also provide and install central station monitoring networks. Sourced by REX, approved contracted remote monitoring services can react to security and safety issues, alerting the proper authorities and contacts.

We have decades of experience with life safety systems, so you can count on us to provide the  system expertise you need. From smoke detection to emergency response notification and smart alarms with audio/visual cues, we can design a comprehensive system that will function in any environment.

Range of Services

Life Safety

-Fire Alarm Systems
-Code Blue
-Emergency Communication
-Assistance Request
-Sprinkler Systems
-Nurse Call Systems


-Alarm Systems
-Closed Circuit TV/Video Monitoring
-Digital Recording
-Card Access Systems
-Central Station Monitoring

Building Automation

-Automated Security
-Sprinkler Systems
-Detection Devices
-Notification Devices
-Valve Monitoring
-Lighting and Temperature Control
-Climate Control

Endorsements from our Clients

I wanted to take a moment to thank Rex Electric for the excellent job you did.  REX personnel were very responsive to every issue and detail of the project.  And they were excellent with helping to drive the schedule and coordinate with other trades.  As the general contractor, we understand that our success is due to the excellent performance of our major subcontractors on this project.



~ Bryan Kreuger, Vice President, Senior Project Manager, LEED A.P., Chicago, Illinois

We would like to send a heartfelt thank you for your help in making our new downtown office such an amazing space that reflects the culture and core beliefs of our company.  We truly appreciate the efforts that REX Electric contributed to this project, and it is only with your help that we could have brought this vision to reality. We look forward to the continued growth of our relationship and to many more successful projects in the future.


~ Chad Correll, Executive Vice President, Executive Construction INC.

I am writing to commend the professionalism and quality of work performed by your employees. (REX personnel) did an excellent job in working with Ragnar Benson to maintain the construction schedule and complete the project with little or no punch list. I would be happy to recommend REX Electric to any future projects Ragnar Benson would be a part of.


~ Chris Grzynkowicz,  Superintendent, Ragnar Benson Construction, Park Ridge , Illinois