Designed, built, and tested in the USA
The trusted source
for I/O products
Data acquisition, control, and communication solutions for embedded and industrial systems. From standard products to custom I/O, ACCES helps connect your application to the physical world.
Compact form factor. Broad capability.

Explore M.2 I/O products →
- 35+Years of I/O experience
- 500+COTS models
- 1,500+MCOTS variants
- 10Interface buses
One source. From standard products to custom I/O.
Proven products. Application-focused engineering.
ACCES I/O Products designs and manufactures data acquisition, control, and communication solutions that connect embedded and industrial computers to the physical world. Choose from more than 500 proven commercial off-the-shelf (COTS) products, 1,500+ modified COTS (MCOTS) variants, or custom hardware and software engineered around your application.
Core product families
Explore ACCES I/O Products
Analog & digital I/O
Multifunction DAQ, analog input and output, digital I/O, isolated inputs and outputs, relays, counters/timers, and FET outputs.
Serial communications
RS-232, RS-422, and RS-485 interfaces for embedded, industrial, and legacy communication requirements.
Rugged USB solutions
Industrial USB data acquisition and rugged USB hubs designed for embedded, mobile, and demanding environments.
Embedded I/O & integration
M.2, mPCIe, PCIe, and stackable embedded I/O, plus enclosures and integrated system solutions.
Applications
Connecting I/O to your application
Defense & aerospace
UAV Systems • Military Robotics • Satellite Communications
Healthcare
Medical Diagnostics
Industrial automation
Transportation & Infrastructure • Industrial & Environmental Monitoring
Select organizations using ACCES I/O
MCOTS + custom engineering
Custom I/O. Built to fit.
From a modified standard product to a complete custom solution, work directly with ACCES engineering to match your electrical, mechanical, environmental, and software requirements. Capabilities include circuit and PCB design, firmware and software development, connector and form-factor changes, conformal coating, ruggedization, and enclosure integration.
ACCES supports your product lifecycle with engineering, documentation, component sourcing, prototype assembly, manufacturing, system integration, testing, and long-term production support.
-
Define
Requirements & interfaces
-
Design
Hardware, firmware & software
-
Build
Prototype, assembly & integration
-
Support
Production & lifecycle support
Software & integration support
Windows and Linux drivers, SDKs, example code, documentation, and programming interfaces help simplify integration. Direct application and engineering support is available for product selection, integration, and custom requirements.
Platform and language support varies by product.
Long-lifecycle support
Long product lifecycles and direct engineering support help OEMs sustain production and installed systems while minimizing unnecessary redesigns.
Corporate credentials & contact
Talk with ACCES
ACCES I/O Products, Inc.
U.S. Small Business
- CAGE
- 0ZE50
- UEI
- XEHNM9NDSG87
- SAM.gov
- Active
- Quality
- ISO 9001:2015 Certified
NAICS334111 • 334119 • 334513 • 334515
334519 • 335314 • 541330 • 541512
Sales & application engineering
Tell us about your requirements. We can help with product selection, integration, and custom I/O.
800-326-1649
858-550-9559
contactus@accesio.com
San Diego, CA 92121
Key contacts
- John PersidokPresidentjpersidok@accesio.com
- Chris PersidokBusiness Developmentcpersidok@accesio.com
- Peter PersidokEngineeringppersidok@accesio.com
- John HentgesSoftware & Digital Designjhentges@accesio.com
- Ellen JingFinance and HRejing@accesio.com
Keep the capabilities brief on hand
A two-page overview of ACCES products, engineering capabilities, credentials, and contacts.










