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  S.I. Tech manufactures fiber optic communication devices such as modems (media converters), multiplexers, repeaters, hubs, and cable assemblies for LAN, WAN, Industrial and Military Applications. Many of these devices convert electrical signals to light, allowing data to be transmitted over fiber optic cabling. This enables data to be transmitted farther, reduces EMI/RFI interference, and provides for secure communications (see why fiber optics).

Product Selections

Fiber Optic Accessories

Fiber Optic Hubs, Repeaters, & Switches

Fiber Products for Industrial Applications

Fiber Optic Modems (Media Converter)

Fiber Optic Multiplexers

Fiber Products for LAN Applications

Fiber Solutions for SCADA

Serial to Fiber Solutions

Signal Distribution Systems

Fiber Products for WAN
(T1/E1/T3/E3/STS1)

Full Catalog

Made in U.S.A.

Additional Assistance

Application Cross-Reference Selection Guide

Application Solution Diagrams

Underwriters Laboratories

The Bit-Driver® Store

NOTE REGARDING ALL NON-U.S. TRANSACTIONS: ALL MANUFACTURED PRODUCTS BY S.I. TECH, INC. ARE SUBJECT TO UNITED STATES EXPORT REGULATIONS AND CONTROLS.


S.I. Tech®, Bit-Driver®, and Fiber Cluster® are registered trademarks of S.I. Tech, Inc.
©2025 S.I. Tech, Inc. All copy and images.