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  • Industry standard, opto-isolated digital I/O modules
  • Choice of AC or DC inputs or outputs
  • Screw terminals for easy interface to field wiring
  • Edge connectors for interface to digital I/O cards via ribbon cable
  • 4000V optical isolation
  • Slim design to save space
  • Alumina substrate provides superior heat dissipation
Last updated on November 2, 2023, 6:20 pm


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Solid-state I/O Modules and Cards


Data Sheets

Drivers and Downloads

Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents

Information about our Free Software packages:

ACCES is proud to provide a full suite of software support with every Data Acquisition product. We are committed to supporting the most popular operating systems and platforms for our customers. Currently we are actively supporting XP -> 10, both 32 & 64 bit, including “Server 2008,” “Embedded,” and “Compact” flavors for all plug-and-play products including PCI, PCI Express, USB, and more. Many products continue to ship with support for additional operating systems such as DOS, Windows 95, 98, Me, NT4, and 2000.


Among the software we deliver with our products are sample programs in a wide variety of programming languages. These samples are used to demonstrate the software interfaces to our products — and many can be used as-is in your production environments, or to test functionality of the devices out-of-the-box. We’re currently actively supporting sample programs in Microsoft Visual C#, Visual Basic, Delphi, and Visual C/C++, with many devices including samples in Borland C/C++ 3.1 for DOS. Additionally we provide National Instruments LabVIEW compatible DLLs and many demonstration VIs for our devices.


Drivers for various operating systems are also provided, including active support for Windows XP -> 10 — all in both 32-bit and 64-bit flavors, and including consumer, server, and embedded varieties — as well as the 2.6 and newer Linux kernels and recent OSX / macOS versions. Many products continue to ship with driver support for Windows 95, 98, Me, NT4, and Windows 2000, but support for these operating systems is considered deprecated.

Setup Programs and Utilites

Our Data Acquisition devices also include a graphical setup utility that walks you through the process of configuring any option jumpers or switches on the device, as well as explaining a little about the various connectors present.

Many devices also include utility programs – little tools to make your use of the device easier, such as EWriter, a program that allows you to read and write data in the user-accessible EEPROM locations on all our USB data acquisitition products; or WinRISC, a “Really Incredibly Simple Communications” terminal program that lets you get started instantly with serial devices.

“Register Level” Documentation

Besides all this software in all these languages and operating systems ACCES has a policy of open and transparent development: none of our lowest-level “register” interfaces are hidden from you — we document every register in every bus card, every command in every serial board, and every usb control transfer in every USB Data Acquisition board. These lowest-level interfaces allow you to develop for our products in ANY operating system or language, regardless of our actively supporting it or having a driver for it. We have customers actively developing in ADA, Android, Python, Java, MATLAB, Solaris, and more, just by referring to our complete low-level interface documentation! And we provide the full source code to all of our drivers, regardless of operating system, to give you an even bigger head start in your own development tasks.

No Fees or Royalties

All of this software is provided at no additional charge, and is licensed under any of a variety of flexible — and royalty free — options. Check out our software license explanation if you’d like more information.

Custom Software

ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.

Further information about available ACCES Software:

Redistributing Windows Drivers
A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.


  • Operating Temperature Range: -30° to +80°C.
  • Storage Temperature Range: -40° to +100°C.
  • Isolation: 4000 V.
  • Input-to-Output Capacitance: 8pF.
  • Mounting Card Dimensions: 14.05″ long x 3.50″ wide.
  • Module Dimensions: 1.70″ long x 0.43″ wide.

DC Input Modules

Input IB5S (IDC5B Type) IN5S¹ (IDC5 Type)
Input Voltage Range 3.3 – 32 VDC 10 – 60 VDC/AC rms
Input Resistance 1 KW N/A
Max. Input Current² 24 mA 24 mA
Drop Out Current 1.0 mA 1.0 mA
Max. Offstate Voltage 2.0 VDC 2.0 VDC / VAC rms
Output IB5S (IDC5B Type) IN5S¹ (IDC5 Type)
Logic Supply Voltage 5.0 VDC 5.0 VDC
Logic 0 Voltage Range (@ pin 3) 1.5 – 6.0 VDC 1.5 – 6.0 VDC
Typical Logic Supp. Current² 10 mA 10 mA
Max. Output Leakage Current³ 10 µA 10 µA
Max. Turn-On Time 300 µSec 20 mSec
Max. Turn-Off Time 600 µSec 30 mSec


DC Output Modules

Input OB5S (ODC5 Type) OC5S (ODC5A Type)
Nominal Input Voltage 5.0 VDC 5.0 VDC
Input Voltage Range 2.5 – 7.5 VDC 2.5 – 7.5 VDC
Drop Out Voltages 1.0 VDC 1.0 VDC
Max. Input Current 27 mA w/o LED 27 mA w/o LED
Typical Input Current 10 mA DC 10 mA DC
Nominal Input Resistance 240 W 240 W
Output OB5S (ODC5 Type) OC5S (ODC5A Type)
Max.Line Voltage 60 VDC 200 VDC
Min. Line Voltage 3.0 VDC 5.0 VDC
Max. Off State Voltage 60 VDC 200 VDC
Max. Off State Leakage 1.0 mA DC 2.0 mA DC
Max. On State Current 3.0A DC4 1.0A DC5
Min. On State Current 10 mA DC 10 mA DC
Max 1-Second Surge 5A DC 5A DC
Peak On State Voltage @ 25°C 1.5 VDC 1.6 VDC
Max. Turn-On Time 50 µSec 50 µSec
Max. Turn-Off Time 100 µSec 100 µSec


AC/DC Input Modules

Input IA5S¹ (IAC5 Type) IM5S¹ (IAC5A Type)
Nominal Input Voltage 120 Vrms / DC 249 Vrms / DC
Input Voltage Range 90 – 140 Vrms / DC 180 – 280 Vrms / DC
Maximum Input Current³ 10 mA rms 8 mA rms
Drop-Out Current 2.5 mA rms 1.5 mA rms
Max. Off-State Input 3.0 mA rms 2.0 mA rms
Max. Off-State Voltage 50 Vrms / DC 120V rms
Output IA5S¹ (IAC5 Type) IM5S¹ (IAC5A Type)
Logic Supply Voltage 5.0 VDC 5.0 VDC
Logic 0 Voltage Range (@ pin 3) 1.5 – 6.0 VDC 1.5 – 6.0 VDC
Typical Logic Supp. Current² 10 mA DC 10 mA DC
Max. Logic Supp. Current³ 18.5 mA 18.5 mA
Max. Logic Supp. Leakage³ 10 µA 10 µA
Max. Output Voltage 30 VDC 30 VDC
Max. Output Current 50 mA DC 50 mA DC
Max. Output Leakage Current³ 10 µA 10 µA
Max. Output Voltage Drop6 200 mV 200 mVDC


AC Output Modules

Input OA5S¹(OAC5 Type) OM5S (OAC5A Type)
Nominal Input Voltage 5.0 VDC 5.0 VDC
Input Voltage Range @ pin 3 2.5 – 7.5 VDC 2.5 – 7.5 VDC
Drop-Out Voltage 1.0 VDC 1.0 VDC
Max. Input Current 27 mA w/o LED 27 mA w/o LED
Typical Input Current7 10 mA 10 mA
Nominal Input Resistance 240 W 240 W
Output OA5S¹(OAC5 Type) OM5S (OAC5A Type)
Nominal Line Voltage 120 Vrms 240 Vrms
Line Voltage Range 12 – 140 Vrms 24 – 280 Vrms
Max. Peak Off-State Voltage 400 V 600 V
Max. Off-State Leakage 2.5 mA rms 4.5 mA rms
Static Off-State (dv/dt) 200 V/µSec 200 V/µSec
Max. On-State Current4 3.0A rms 3.0A rms
Min. On-State Current 50 mA rms 50 mA rms
Max. 1-Cycle Surge 100A peak 100A peak
Peak On-State Voltage 1.6V peak 1.6V peak


1. Can be used with either DC or AC inputs.
2. At nominal voltage with LED on board.
3. At maximum logic voltage.
4. Derate 33 mA/°C above 25°C.
5. Derate 20 mA/°C above 60°C.
6. At maximum output current.
7. LED in series w/nominal voltage.
Regulatory Compliance 
Declaration of Conformity, and Test Reports are on file. Users must use appropriate shielded cables.

Please note, prices below require a minimum order quantity of 10 pieces, please call for all other quantities.

ModelDescriptionPrice (USD)

Solid-state I/O Modules and Cards