Sealevel Systems

What Sealevel Systems does

Sealevel Systems, Inc. is a privately held industrial hardware company founded in 1986 and headquartered in Liberty, South Carolina. The company designs, engineers, and manufactures ruggedized embedded computers, data acquisition (DAQ) modules, tactical communications products, and edge AI platforms, organized across sub-brands including Relio, Torvex, SeaI/O, SeaNET, SeaPAC, HazPAC, and Flexio. Its portfolio spans more than 350 standard SKUs plus custom-engineered solutions, with technical differentiators in COM Express modular architecture, MIL-STD-1553 FPGA-based tactical interfaces, optically isolated I/O, and SWaP-C2-constrained edge designs built to military shock, vibration, and temperature specifications.

The business makes money through two primary streams: catalog hardware sales of standard I/O, DAQ, USB, and PCI/PCIe products at MSRPs ranging from roughly $79 to $522, and quote-based sales of higher-value embedded computers, rugged panel PCs, and custom engineering services typically structured as multi-year program contracts. Distribution is direct via the company website (e-commerce plus Request a Quote), phone sales, and field engagement at major industry trade shows including Automate and embedded world. Named program customers include the FAA (custom serial computing for nationwide flight data storage), a defense prime contractor (Boeing F-15EX Eagle II avionics test), and a public safety alerting platform vendor, alongside a long tail of industrial automation, energy, medical, transportation, and smart city buyers.

Vertically integrated US manufacturing under AS9100D and ISO 9001:2015 certifications is central to the value proposition, particularly for defense and aerospace buyers. Recent strategic emphasis has shifted toward edge AI (the NVIDIA Jetson-based Torvex platform), predictive maintenance themes tied to multi-million-dollar hourly downtime costs, and selective international trade show expansion (embedded world Germany 2026). Ownership is independent with no disclosed institutional backing, and there are no reported M&A, funding events, or management transitions in the input data.

Name

Sealevel Systems

Legal name

Sealevel Systems, Inc.

Website

https://sealevel.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

51–100 employees

Short description

Sealevel Systems designs and manufactures ruggedized embedded computers, industrial I/O and data acquisition modules, tactical communications hardware, and edge AI platforms for defense, aerospace, automation, and industrial customers, with vertically integrated US manufacturing and 350+ standard SKUs.

Ownership category

akta.pro rank

Product category

Industrial Embedded Computing Hardware

NAICS

Computer and Peripheral Equipment Manufacturing (3341), Computer Terminal and Other Computer Peripheral Equipment Manufacturing (334118), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511), Other Communications Equipment Manufacturing (33429)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Computer Peripheral Equipment, Nec (3577), Communications Equipment, Nec (3669)

akta.pro primary industry

Secure Communications, Cryptography & Key Management Systems (IMABAOAK)

Keywords

• Industrial embedded computing
• Rugged panel PCs
• Data acquisition devices
• Tactical communications hardware
• USB serial adapters

Headquarters

HQ city

Liberty

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Hardware Product Sales: Sale of standard and custom industrial computing hardware, embedded computers, data acquisition devices, serial adapters, USB products, and tactical communications equipment. Products are sold directly and through distribution with pricing ranging from tens to hundreds of dollars per unit.
2. Custom Solutions and Engineering Services: Custom hardware development and engineering services for unique problems across industries and platforms. The company develops solutions for specific customer requirements with full lifecycle support from concept to production.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Sealevel Systems designs, manufactures, and sells industrial embedded computing hardware, data acquisition (DAQ) devices, rugged panel PCs, tactical communications equipment, and USB/PCI/PCIe connectivity adapters for defense, aerospace, automation, and industrial customers. The company also provides custom hardware engineering and full-lifecycle manufacturing services for unique application requirements. Products are built to meet military and aerospace specifications (MIL-STD, AS9100D, ISO 9001:2015) and are produced at a vertically integrated U.S. facility in South Carolina.

Product overview

Sealevel Systems is an industrial hardware company offering over 350 standard computing and industrial I/O products, organized into several interconnected product families. The portfolio is anchored by embedded computing products (Relio R1 family of rugged embedded computers including Relio R1 Edge, Relio R1 Rugged, and Relio R1 HPC+; SeaPAC and HazPAC rugged panel PCs; Flexio fanless industrial computers) and data acquisition products (SeaI/O modules supporting RS-232, RS-485, USB, Ethernet, and wireless interfaces; eI/O Ethernet DAQ devices). Additional product families include tactical communications (MIL-STD-1553 solutions, sync serial radio adapters), Ethernet servers and adapters, USB devices and isolators, and PCI/PCIe expansion cards. The company also offers NVIDIA Jetson-based edge AI platforms (Torvex) for harsh environment AI/ML processing. Products are designed for modularity and SWaP-C2 optimization, with computer-on-module carrier boards enabling customization.

Differentiator

Problem solved

Functional benefit

Brands

• SeaI/O: SeaI/O and SeaNET I/O solutions for industrial data acquisition and control.
• SeaNET
• Relio
• Torvex
• SeaPAC
• HazPAC
• Flexio
• SeaLINK+
• SeaDAC
• SeaLATCH
• SeaISO
• eI/O

Products and services

• Relio R1 Family of Rugged Embedded Computers A family of rugged embedded computers including Relio R1 Edge, Relio R1 Rugged, Relio R1 HPC+, and Relio R1 Industrial variants, designed for demanding industrial, aerospace, and defense applications requiring fanless, solid-state operation, extended temperature and vibration tolerances, and configurable I/O.
• SeaPAC Rugged Panel PCs Rugged touchscreen flat panel computers combining Relio embedded computer durability with resistive touch screens in sizes from 6.5" to 17", designed for industrial environments.
• HazPAC Explosion-Proof Rugged Panel PCs Rugged panel PCs certified to ATEX, IECEx, and Class I Division 2 (Groups A, B, C, D, T4) standards, designed for the harshest environments including hazardous and explosive atmospheres.
• Flexio Fanless Industrial Embedded Computers Fanless industrial embedded computers with solid-state designs, robust I/O options, and extended temperature tolerances, available with Intel Atom and Intel Core i5 processors.
• Torvex Edge AI Platform An NVIDIA Jetson-based edge AI platform that delivers AI/ML processing capabilities at the edge for industrial and defense applications in harsh environments.
• SeaI/O Data Acquisition Modules Family of data acquisition modules supporting RS-232, RS-485, USB, Ethernet, and wireless Ethernet interfaces, with optically isolated inputs, Reed and Form C relay outputs, TTL interfaces, and A/D and D/A functionality for industrial monitoring and control.
• SeaNET Ethernet I/O Solutions Ethernet-based I/O solutions including Modbus TCP interfaces for connecting to Ethernet networks and controlling digital and analog signals remotely.
• eI/O Ethernet Modbus TCP DAQ Devices Ethernet-based data acquisition devices supporting Modbus TCP with various configurations including digital I/O, analog inputs, relay outputs, and PoE options.
• SeaDAC USB Data Acquisition Devices USB data acquisition devices with isolated inputs and Form C relay outputs, supporting configurations such as 16 isolated inputs and 8 Form C relays for industrial control applications.
• SeaDAC Lite USB Relay Modules USB-to-relay output modules providing Form C relay outputs for controlling external devices via USB connection.
• SeaLINK+ USB to Serial Adapters Family of rugged USB to serial adapters for RS-232, RS-422, and RS-485 connections, including DB9 and other connector options for industrial connectivity.
• SeaLATCH Locking USB Cables and Adapters Locking USB cables and panel mount adapters providing secure, high-retention USB connections for industrial environments.
• SeaISO USB Isolators USB 3.0 isolators providing electrical isolation to protect equipment from ground loops and voltage transients in industrial environments.
• COM Express Carrier Boards Computer-on-Module carrier boards supporting COM Express Type 6 architecture, including Type 6 Compact, Type 6 ATX, and evaluation boards, that reduce complexity, cost, and time required for custom computer system design.
• MIL-STD-1553 Tactical Communications Solutions MIL-STD-1553 solutions using software IP cores integrated into FPGA devices for tactical communication applications in military and aerospace systems.
• Sync Serial Radio Adapters Synchronous serial interfaces available in PCI, PCIe, and ACC-188 form factors for radio and tactical communication applications.
• PCIe Digital I/O Cards PCI Express digital I/O cards providing isolated inputs and Reed Relay outputs for industrial control and data acquisition applications.
• PCI Digital I/O Cards PCI form-factor digital I/O cards including asynchronous and synchronous serial adapters and digital I/O cards for legacy industrial applications.
• PCIe Synchronous Serial Adapters PCI Express synchronous serial adapters for high-speed serial communication in industrial and tactical applications.
• SBC-R9 ARM-Based Embedded RISC Computer ARM-based embedded RISC computer available as a quickstart kit with 64MB SDRAM and 256MB Flash for low-power industrial embedded applications.
• Custom Hardware Engineering and Manufacturing Services Custom hardware development and engineering services that design and manufacture solutions for unique customer requirements across industries, with full lifecycle support from concept through production.

Quantifiable outcome

• Unplanned stoppages can cost manufacturers up to $2.3M per hour; predictive maintenance is becoming a strategic imperative

Named customers3 records

Segments9 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature7 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• National Instruments (NI, now part of Emerson): NI is a long-established leader in data acquisition, test and measurement, and industrial I/O, directly comparable to Sealevel's SeaI/O and SeaDAC DAQ lines. Now backed by Emerson, it is a much larger incumbent with broader catalog and global reach.
• Curtiss-Wright Defense Solutions: Curtiss-Wright supplies rugged COTS computing, secure communications, and defense electronics for aerospace and military programs. Comparable to Sealevel's MIL-STD-1553, Relio R1 Rugged, and HazPAC offerings but at much greater scale and program depth.

Direct peers

• Advantech: Advantech is a major global manufacturer of industrial embedded computers, panel PCs, and DAQ modules. It overlaps with Sealevel's Relio R1, SeaPAC, and Flexio product lines across factory automation and edge computing.
• Kontron: Kontron designs and manufactures embedded computing platforms, COM Express modules, and rugged systems for industrial and defense markets, directly comparable to Sealevel's Relio R1 family and COM Express carrier boards.
• ADLINK Technology: ADLINK produces embedded computing modules, edge AI platforms, and DAQ products for industrial automation, transportation, and defense. It overlaps with Sealevel's Torvex edge AI, Relio R1, and SeaI/O portfolio.
• VersaLogic: VersaLogic designs and manufactures rugged embedded computers for industrial, medical, and defense applications, with a similar focus on extended temperature, shock/vibration tolerance, and long-lifecycle support as Sealevel's Relio R1 and Flexio lines.
• Crystal Group: Crystal Group provides rugged servers, embedded computers, and edge AI platforms for military, aerospace, and industrial customers, comparable to Sealevel's MIL-STD rugged Relio R1 HPC+ and Torvex offerings.

Emerging players

• Diamond Systems: Diamond Systems specializes in rugged embedded single-board computers, DAQ, and COM-based systems for industrial and defense OEMs, comparable in scope to Sealevel's Relio and SeaI/O families but with a smaller catalog and customer base.
• AAEON Technology: AAEON designs industrial motherboards, embedded platforms, and edge AI systems, comparable to Sealevel's Flexio, Relio R1, and Torvex product families across factory automation and edge computing.
• WinSystems: WinSystems produces embedded single-board computers and rugged industrial PCs for harsh-environment applications, overlapping with Sealevel's SBC-R9 and Relio R1 Industrial product lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/SealevelSystems
• YouTubeyoutube.com/user/SealevelSystemsInc
• Facebookfacebook.com/SealevelSystemsInc
• LinkedInlinkedin.com/company/129645
• Instagraminstagram.com/sealevelsystemsinc

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sealevel Systems