SDI (SDI Presence LLC)

Chicago, IL 60601


About SDI (SDI Presence LLC)

SDI Presence LLC is an IT consultancy and managed services provider (MSP)


200 East Randolph, Suite 3550
Suite 400
Chicago, IL 60601

More Info on SDI (SDI Presence LLC)

About SDI (SDI Presence LLC)

SDI Presence LLC is an IT consultancy and managed services provider (MSP) that leverages its strong team presence to advance our clients to a secure digital enterprise. With a 20-year corporate resume, SDI delivers strategic managed services, IT consulting, and hybrid infrastructure solutions to optimize our clients’ technology environments. SDI’s public safety and cybersecurity client portfolio includes some of the nation’s largest airports, utilities, commercial real estate portfolios, and government agencies. SDI is a certified Minority Business Enterprise (MBE) with the National Minority Supplier Development Council (NMSDC), California Public Utilities Commission (CPUC), and other state and local government certifying agencies. Visit us at and connect with us on Twitter and Instagram.

Products and Press Releases

SDI will be upgrading the public address systems at O'Hare International Airport.
Emergency Communications Equipment

SDI awarded PA system upgrade at O’Hare International Airport

April 26, 2017
Upgrade covers both general and emergency announcements throughout the airport
Photo: Wikimedia Commons (Cygnusloop99)
Inside the Terminal 4 S2 Concourse at Phoenix Sky Harbor Airport
Integrated Security Management Systems & PSIM

SDI Presence LLC to help deploy advanced event management platform at Phoenix Sky Harbor International Airport

Oct. 24, 2016
SDI to tailor airport’s operating procedures into Saab Sensis’ Situational Awareness for Enhanced Security (SAFE) system
Howard Belfor brings 35 years of security industry product, integration and services experience in the security control marketplace.
Dealers, Integrators & Installing Companies

Security industry veteran Howard J. Belfor joins SDI

April 14, 2015
Belfor comes aboard as a special advisor to the board of managers

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