M & R Electronic Systems has proudly serviced Chicago and the greater suburban area for over 65 years. We have earned a solid reputation with our customers. As licensed and bonded experts in servicing and installing security, communications and life safety systems, we strive for complete satisfaction. In the last 5+ years we expanded our business and added a consulting division that offers a full range of services. This group of professionals has been involved in projects all over the country in both the residential and commercial markets. We treat you as our business partner as we implement comprehensive and integrated solutions for your building. * Illinois Private Alarm Contractor License #127.000971