• A/V

    From collaborative work spaces & conference rooms to the most interactive classrooms & auditoriums, SI-Legacy can help you explore your options in audio, video & control. We can assist with design and implement the best solution for you!

  • Comm/Data

    Whether connecting in the data center, the workstation or between buildings, let SI-Legacy help you explore your options, assist with design and implement the best solution for you!

  • Security & Safety

    From access control and mass notification to what megapixel camera is right for your application, SI-Legacy can help you explore your options for all things security. We can assist with design and help implement the best solution for you!

SI-Legacy…Your Technology Liaison for Everything Low Voltage!
SI-Legacy is the premier rep firm in the Midwest able to offer the largest breadth of solutions across all low voltage technologies. Whether it’s Security, Data Infrastructure or A/V, we strive to be the first choice among customers and vendors by providing exceptional customer service, while maintaining our reputation for honesty and integrity.
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  • Covid Solutions
  • Infinium Fiber System

    Infinium Quantum™ Fiber System

    A smarter way to connect.
  • Altronix Home Page
  • Superior Powerwise

Structured Innovations and Legacy Marketing Merge

About our Merger
About our Merger
Structured Innovations and Legacy Marketing merged in 2019. With a united sales team of 20 Reps, the combined firms will continue to bring you even better service and products from the most premier manufactures in the security and communications industries!