About Denning

Denning Electronics has solved big protection and surveillance problems by providing sales and technical support to distributors, security system integrators, engineering design firms, architects, and system users. Our specialties include outdoor intrusion detection; video and audio surveillance; video/audio/data networks and transmission; access control; and ballistic/blast/chemical/acoustic barriers that safeguard critical facilities.

Denning has from our offices in the greater Chicago, Illinois metropolitan area, provided consultation and equipment for some of the highest profile facilities in the United States. Our clients include regulated nuclear utilities, the US Department of Energy, Illinois Department of Transportation, Illinois Tollway Authority, City of Chicago, Illinois and Wisconsin Department of Corrections, US Secret Service and many other state, local and federal agencies. We also serve schools, banks, manufacturers, food producers, distributors, performing arts centers, and retail establishments.

Our collaboration with professionals worldwide and experience with such a range of applications ensures our clients’ security and protection. Denning represents leading manufacturers including Southwest Microwave, DSI, Vigitron, Vingtor Stentofon, CDM Wireless, Site Pro, Overly Door, Tiger Door, Commercial Door Systems, and National Custom Hollow Metal. Because of the support of these manufacturers, our base services are free.