Join Sealevel for APTA 2023

Join us during APTA Expo 2023 at booth 4765 to demo the industry-leading Relio® R1 Rugged Industrial Computer. You'll experience firsthand the unit’s ability to withstand the shock and vibration that are primary challenges in transportation systems. Additional Sealevel product demonstrations will focus on solutions to support a wide array of transportation applications – from OEM solutions for ticket vending to passenger analytics data acquisition and monitoring.

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Reliable, Sustainable Solutions for Public Transportation

Sealevel reinvented the industrial I/O and computing industry with the first RS-422/485 communication adapter for the IBM PC. Since 1986, Sealevel has continued to redefine design, engineering and manufacturing for industrial computers, synchronous serial, Ethernet serial servers, and IoT hardware and software.

We are committed to a first-in-industry lifetime warranty on I/O and long-term availability of all products, beyond the life of your mission.

From automotive manufacturing to electric bus charging stations to industrial vehicle fleet management solutions, Sealevel’s team delivers unparalleled performance while meeting industry-specific certifications and requirements.

Featured Products

Relio R1

Relio R1 Industrial Computer - Compact, Rugged, and Configurable

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Rugged SuperSpeed 4-Port USB 3.1 Hub

Rugged SuperSpeed 4-Port USB 3.1 Hub with Battery Charging Downstream…

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HazPAC 10 Rugged Panel PC 8.4″

HazPAC 10 8.4" Rugged Panel PC Touchscreen

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Ethernet Modbus TCP to 96 Channel TTL Digital Interface

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USB 2.0 to 16-Port RS-232, RS-422, RS-485 DB9M Serial Interface…

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PCMCIA RS-232 Serial Interface Card

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Bring It On

Sealevel was founded in 1986 with a commitment to providing mission critical I/O and computing solutions. Today we’re proud to say that our products go all over the world. But it all starts in Liberty, South Carolina.

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We Can Build It.

From wide-temperature industrial computers, to I/O intensive fetal monitoring systems, our team continues to develop solutions for unique problems across industries and platforms.