Electrical to Optical Converters

Electrical to Optical Converters and Fiber Service Unit Products

RFL's Electrical to Optical Converters and Fiber Service Unit products are designed to perform a multitude of applications, and can perform in basic to the most-complex system configurations. Click below to explore our product offerings.

Fiber Service Unit – T1/E1 and C37.94

RFL offers two types Fiber Service Unit (FSU) products for substation or industrial applications, including one for protective re-laying that complies to the IEEE C37.94 standard and another for T1/E1 applications.


RFL Connect

Watch the latest courses today

View Course Videos

Online Training Courses In
Networking, Communications,
Protection & Cyber Security

Learn more

Utility Industry Solutions

Utility industry and electric utility white papers by RFL providing communications and protection solutions to today's challenges, such as migrating data from leased lines.


Read our Electric Utility White Papers

Upcoming Events

Find RFL and Hubbell at an upcoming trade show in your area!

See Upcoming Trade Shows


RFL offers a 24-hour emergency service program that provides specialized service anytime, anywhere in the world. All of RFL's products are engineered and manufactured to the highest-quality standards and are supported by a team of highly trained customer service engineers.

Contact Sales Associate