Rugged SuperSpeed Hubs Have Arrived

Sealevel announces the Rugged SuperSpeed 7-Port USB 3.1 Hub. With an industrial-grade housing, widest-in-industry operating temperature and up to 2400mA downstream power, this hub is redefining rugged. 

Meet the Hub

350+ Critical Communications Solutions in One Box

A Sealevel Blackbox can be an industrial computer, IoT edge device, PCIe or PCI card, Ethernet serial server, USB serial adapter – or any one of our 350+ critical communications solutions.

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By Land and Sea: Ground Control for the US Navy

The U.S. Navy’s arsenal includes a jet-powered, long-range cruise missile: an aerospace prime contractor contacted Sealevel for serial communications connectivity solutions.

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Lifetime Warranty.
Longterm Availability.

We offer over 350 core products, available in nearly every configuration imaginable.

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Bring Legacy Systems Forward with IIoT Integration

Together with integrators, Sealevel is revolutionizing the way companies approach industrial IoT adoption to improve efficiencies and realize new revenue streams. 

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Big Picture Thinking

Whether your assets work in the most extreme environments or stay at a desk, we’ve got you covered. Sealevel engineers design computing solutions that excel across industries.


We've exceeded the expectations of
every major US and Allied nations military contractor.
We'll do the same for you.


What’s your flavor?
Oil, gas, electrical, solar, wind?
We’ve got the scoop on energy.

IIoT Integrators

Predictive maintenance.
Efficient operations.
New revenue streams.

Industrial Automation

We didn't invent
industrial automation.
But we might as well have.


How many senses would a sensor sense
if a sensor was powered by Sealevel?
All of them.

Public Safety

Connectivity solutions
where they matter most.
Is fast fast enough?

Smart Cities

Lights. Cars. Cities.
They're all getting smarter.
Shouldn't you?


Ready to go further with your
transportation solutions?
We are.


Pumps. Pipes. Tanks.
Anywhere else you have water,
we can help you control it.

Creative Doers, Serious Business.

Welcome to Sealevel Systems, Inc.

Since 1986, we’ve brought control to the user with our innovative I/O solutions that enable computer connectivity. As our product families expand, responsive thinking and creative development continue to drive our company. From engineering design to production and support, Sealevel ensures client satisfaction with precision-made technology and high-quality services.

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Featured Products

See Product Details
USB to 4 Isolated Inputs Digital Interface Adapter
Configurable Relio R1 Industrial Computer
Ethernet to 16-Port RS-232 Serial Server
Ethernet to 4 Optically Isolated Inputs / 4 Reed Relay Digital Interface Adapter

Latest News & Insights

June 22, 2021 — Industry Trends

Responding to New Demands: The Unmanned Campaign Plan

The global security environment is shifting towards great power competition: when two or more countries have amassed enough military, political and economic power to compete.…

June 21, 2021 — Sealevel Products

The What & Why of Industrial USB Hubs

USB hubs, specifically those used in industrial applications, are valuable in a variety of settings. High current USB peripherals may include phones, vision systems for…