MDI Security Systems Signs Business Agreement with PSA Security Network

SAN ANTONIO, TEXAS – July 25, 2005 – MDI, Inc. (NASDAQ: MDII), a recognized leader in delivering open integrated security control, alarm management and video security solutions, announced today that MDI Security Systems has entered into a product sales and promotion agreement with the PSA Security Network. Under the agreement, PSA will offer MDI security products to its dealer and integrator members through its nationwide purchasing network.

With a growing membership base of over 285 dealer and integrator locations, the PSA Security Network is the world’s largest electronic security cooperative. PSA member companies are responsible for over $1 billion dollars of electronic security installations including video security, access control and life safety systems.

“The MDI product line is truly a perfect fit for the business needs of our members and should create new business opportunities for them as our relationship progresses,” stated Bill Bozeman, President and Chief Executive Officer of the PSA Security Network. “We have recently received feedback on how MDI has delivered superior customer service and support to some of our valued members. This level of service, combined with an innovative product line that can immediately increase sales for our members is what makes MDI the right choice,” he added.

The new relationship will be highlighted at the upcoming ASIS security conference in Orlando, FL as well as the 2006 PSA®-TEC (Training, Exhibits and Conference) event in Chicago, IL. MDI will support the partnership by providing specialized product training events for members along with collective marketing programs that will promote MDI products to PSA dealers and their customers while raising the awareness of the PSA organization’s value to future prospective members.

“PSA’s strict criteria for selecting its members and vendors has positioned it as one of the most productive and respected organizations in the security business,” said Guy Alderton, Director of Business Development for MDI. “This agreement offers MDI the ability to build business relationships with the highest caliber and most respected dealers in the industry and MDI is dedicated to assisting in the promotion of their future growth.”

About the PSA Security Network
PSA Security Network is the world’s largest electronic security cooperative. PSA members are responsible for over $1 billion dollars of electronic security and life safety installations. PSA specializes in the design, installation and integration of CCTV, access control and life safety systems for security, management control and communications. For more information on the PSA Security Network, please visit www.psasecurity.com.

About MDI, Inc.
For over 25 years, MDI (NASDAQ: MDII) has been protecting their clients’ people, facilities and assets by manufacturing innovative and dependable integrated security software and hardware solutions that can be comprehensively managed from a centralized point of command and control. The MDI product family currently protects over 8 million alarm points across the globe for many of the world’s most recognized organizations including Microsoft, MBNA Worldwide, John Deere, Pepsi, FBI, US Secret Service, Fidelity Investments, Bureau of Engraving & Printing, Southwestern Bell, Department of Defense, IRS, NASA, Disney, Smithsonian Institution and MIT to name a few. For more information on MDI Security Systems including its award-winning SAFEnet, iTRUST, ViewPoint and nTEGRITY product lines, please visit www.mdisecure.com.

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