Embedded Computers Allied Data Systems

Embedded Computers * Military and Avionic Data Bus Interfaces * Industrial Interfaces * PC/104

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In 1984, Tom O'Hanlan designed the first RS-422/485 communication adapter for the IBM PC. From that moment of inspiration, Tom and his wife Susan saw an ever-growing industry-wide need - and began work to fulfill it. In 1986, they formed Sealevel Systems, Inc. committed to providing reliable, well-designed communication adapters for the IBM PC and compatibles.

Why the name Sealevel?

Tom wanted a name that didn't sound like a computer company. After listening to music (his other passion), the word Sealevel came to Tom's mind. In a serendipitous coincidence, the jazz/blues/rock band that had once backed The Allman Brothers Band, released their self-titled debut album in 1977. Their name? Sea Level. In 1986 Sealevel the company was born. Today, Sea Level bandleader and acclaimed keyboardist, Chuck Leavell, is the celebrity spokesperson for Sealevel Systems, Inc. and Tom's trusted friend.

More than 20 years later, Sealevel continues to provide innovative, reliable hardware and software products to enable computer connectivity and control. Today, we manufacture more than 300 standard I/O products with ISO 9001: 2000 registration and a standard lifetime warranty.


Distributed I/O - all the I/O you are ever likely to need for factory automation Sea I/O Brochure (PDF)

Distributed I/O


Monitor and control real-world signals with any computer using Sealevel digital and analog I/O products.

Select from field-proven optically isolated inputs, Reed and Form C relay outputs, TTL connect to solid-state relays, A/D, and D/A functionality.

Whether you need to monitor just a few inputs or need to create a distributed control network, we'll help you configure a solution that is perfect for your application

Synchronous and Asynchronous Serial Communications
Serial InterfacesSealevel asynchronous and synchronous serial interfaces are designed for high-speed applications and support RS-232, RS-422, RS-485, and RS-530 electrical interface standards. Sealevel's 9065 produces USB to synchronous serial communications to Tactical Radios for the Military.

Whether you choose a traditional bus-based approach or opt for easy-to-use USB or Ethernet solutions, you will be quickly communicating with your serial devices. Every product ships with thorough software drivers and useful tools to make setup and installation a snap.
Sealevel Embedded RISC Computers
The R9 family is an application-ready platform for your next product design. R9 SBC Data Sheet (PDF), Relio R9 Data Sheet (PDF)

Embedded ComputingEmbedded Computing

The R9 delivers RISC computing power using the latest CE 6.0 embedded software environment. The unmatched I/O features extend the capabilities beyond traditional RISC applications. The R9 is perfect for embedded applications requiring small size, wide operating temperature range, and flexible I/O connectivity.
HMI and Industrial Computers
Designed for I/O intensive applications, the Relio family of embedded I/O servers combine the reliability of a PLC with the configurability of an industrial computer. SeaPAC HMI systems combine an R1000 industrial computer with bright TFT LCD and touchscreen monitors to create an impressive interactive computing solution.

HMIEmbedded ComputingIndustrial Computers
Sealevel - Custom Solutions
At Sealevel the challenge is as satisfying as the solution. Our engineers work with your team from conception to completion to develop a product that perfectly meets your specifications. Learn more about custom solutions we have designed for customers around the world.

Custom Solutions


Sealevel is a premium partner of ours, together we provide solutions !