Limits? We’ve never met them.

Our devices don’t have have limits –
and neither do our our test capabilities. 

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Monitor, control and improve real-world processes.

Sealevel announces the release of SeaCloud 2.0, the latest version of our secure, robust, Industrial Internet of Things software platform. 

Read about SeaCloud 2.0

Thrives in rugged environments. Lives to test limits.

Yes, this is a tardigrade. And it’s also every product Sealevel designs and manufactures. Resilient. Reliable. Up for the challenge.

Learn About Tardigrades and Sealevel

We Put the I/O in IoT™

Custom IoT hardware and private-labeled cloud software that allow you to monitor and control real-world processes.

Join the IIoT Revolution

World-Class; American Made

From the smallest components to the most extensive projects, we address every opportunity with excellence and dedication to detail. You can find our products setting new standards from 911 call centers to outer space.

Read the Sealevel Story

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.

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.

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.

Learn More

Featured Products

See Product Details
USB to 32 Optically Isolated Inputs
Ethernet to 32 Channel TTL Digital I/O Adapter
SeaISO Single Port Inline USB Isolator (UL Recognized)

Latest News & Insights

February 18, 2021 — IoT

More, Faster, Safer: The Promise of Wi-Fi 6

Wi-Fi 6 (or 802.11ax) is the latest generation of Wi-Fi, although Wi-Fi 7 is hot on its heels. Wi-Fi 6 offers faster speeds, increased throughput,…

February 12, 2021 — Design

Securing Modbus Communications: Modbus TLS and Beyond

Modbus is a communications protocol developed in 1979 by Modicon to transmit messages between industrial control and monitoring devices. Modbus is a freely available open…