Pioneering innovative and high-performance solutions that keep critical infrastructure connected and secure in the harshest environments.
Tristan Harris, President/CEO

Connecting What Matters—With Innovation and Reliability

RLH Industries is a leading provider of hardened fiber optic communication solutions engineered for the most demanding environments. Since our founding in 1988, we’ve been delivering products that connect, power, and protect critical infrastructure across utilities, transportation, energy, government, and industrial sectors.

Our mission is simple: to create rugged, high-performance fiber optic systems that ensure safety, security, and seamless connectivity—wherever reliability is non-negotiable.

From remote substations to complex industrial sites, RLH products are built to perform at the highest standards. Our solutions are trusted in environments where conventional technology fails, thanks to a relentless focus on quality, customization, and technical excellence.

Why RLH?

Our Products

RLH specializes in:

• Hardened Fiber Optic Converters
• Industrial Ethernet Switches
• Fiber Optic Connectivity
• Power Supplies
• Outdoor Enclosures

Whether you’re securing critical communication lines or expanding network reliability in extreme conditions, RLH Industries delivers end-to-end solutions that outperform the competition.