31 Years of Excellence

RLH Industries, Inc. designs, engineers, and manufactures fiber optic links and fiber optic products, equipment, enclosures, cable and supplies for the telecommunications, networking, power, automation and control, and general commercial industries.

Featured Products

Why Choose RLH?

30 Years of Excellence

RLH Industries has been an innovator and driving force in the fiber optic industry since 1988.

Lifetime Warranty

Our warranties are a reflection of our commitment to manufacturing the highest quality products.

Expert Support

At RLH, we are not only committed to giving you great products & services, but also a great experience.

Product Overview

Fiber Optic Isolation Systems

RLH Fiber Optic Isolation Systems are industrial copper-to-fiber media converters designed to provide high voltage isolation for service providers and utility companies.

Industrial Media Converters

RLH Industrial Media Converters are stand-alone copper-to-fiber media converters designed to meet the demands of critical networks in harsh industrial environments.

Industrial Ethernet Switches

RLH Industries hardened Ethernet switches included, Gigabit, Unmanaged, Managed, and Power-over-Ethernet (PoE/PoE+).

Ethernet IO

RLH Ethernet IO products enable comprehensive access and control via Ethernet of remote digital I/O via its Web Interface, Modbus TCP, SNMP, or DNP3 protocols.

iMux Multiplexer System

The iMux is a powerful fiber optic modular multiplexer capable of providing up to 16 channels of T1, RS-232, analog phone FXO/FXS, and 4 wire analog data.

Cable Assemblies

We offer a wide variety of fiber patch cords, bulk fiber cable, customer cable assemblies, and other cable installation accessories to meet industry needs.

Patch Panels

We offer a wide variety of fiber patch panels as well as a large selection of stocked fiber adapter plates available with ST, SC, LC, FC, MTRJ, or MTP Adapters.

Cabinets & Enclosures

RLH has a full line of outdoor cabinet and enclosures for telecommunication equipment which provide secure and reliable protection from outdoor environments.

Power Supplies

RLH manufactures AC/DC power supplies, DC/DC converters, Solar and battery backup systems to meet a variety of telecommunications industry applications.


Utilities Technology CouncilAtis Protection Engineers Group (peg)IEEE Pes GroupGPR Engineering ServicesAFCEASmart Electric Power AllianceCWEA

RLH Industries - Fiber Optic Link