Micro800 Expansion I/O Modules

Our Bulletin 2085 Micro800® Expansion I/O modules extend the capabilities of the Micro850® and Micro870™ controllers by maximizing flexibility of the I/O count and type. The I/O module snaps firmly to the right side of Micro850 and Micro870 controllers, supporting both DIN rail and panel mount.

Bulletin 2085 Micro800 Expansion I/O Modules
  • Overview
  • Product Selection
  • Specifications
  • Software
  • Documentation
  • Resources


  • Provides additional analog I/O,  digital I/O and specialty capabilities
  • Offers removable terminal blocks for ease of installation, maintenance and wiring

2085 Analog Expansion I/O Modules

  • Analog input and output modules available: 4-channel, 8-channel, isolated
  • High resolution
  • High accuracy

2085 Digital Expansion I/O Modules

  • Variety of DC and AC discrete modules available to suit different applications
  • Solid-state output modules available for applications that require more than relays
  • High-density discrete I/O module available to reduce space consumption

2085 Specialty Expansion I/O Modules

  • Resistance temperature detector (RTD) available (4-channel, isolated)
  • Thermocouple (TC) modules available: 4-channel, isolated
  • High accuracy

2085 Bus Terminator Expansion I/O Modules

  • End cap terminator

Additional Information

  • Need help getting started with our Micro800 controllers and Connected Component Workbench programming and configuration software? Watch these videos on YouTube for information about plug-in modules, ladder programming. These videos also explore the capabilities of our Micro800 controllers.
  • Our Connected Component Solutions offer a simple, cost effective micro-automation solution for builders of small, standalone machines.
  • Discover the benefits of modular flexibility by watching the Micro850 Introductory Animation and Micro870 Controllers Overview videos.

To view commonly ordered and quickly available products, use the Product Configuration Assistant for our complete product offerings.


Micro800 Programmable Controllers Family Selection Guide2080-SG001


  • C-Tick
  • CE Marked
  • cULus Marked
  • Hazardous Environment Class 1 Division 2
  • KC

Product Certifications

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.


Use Connected Components Workbench software to design and configure your Micro800® controllers.

Learn More

Additional software products are available from Rockwell Software.


Micro800 Family of PLCs Brochure2080-BR001
Micro870 Programmable Logic Controller Product Profile2080-PP006
Micro850 Programmable Logic Controller Product Profile2080-PP003
Micro800 Programmable Controllers Family Selection Guide2080-SG001
Micro800 16-point and 32-point Input Modules Installation Instructions2085-IN001
Micro800 Bus Terminator Module Installation Instructions2085-IN002
Micro800 16-pt Output Modules Installation Instructions2085-IN003
Micro800 8-Point and 16-Point AC/DC Relay Output Modules Installation Instructions2085-IN004
Micro800 8-Point AC I/O Modules Installation Instructions2085-IN005
Micro800 Analog I/O Modules Installation Instructions2085-IN006
Micro800 Thermocouple/RTD Input Module Installation Instructions2085-IN007
Micro830, Micro850, and Micro870 Programmable Controllers User Manual2080-UM002
Micro800 Expansion I/O Modules User Manual2080-UM003
More Micro800 Controller publications in Literature LibraryAll Languages

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Product Certifications

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Configuration and Selection Tools

Other Resources

  • Sample Code Library — Retrieve samples of code that have been developed by other users and post code that others might find helpful.
  • Knowledgebase — Visit our online resource for technical information, support chat and forums, software updates, and product safety advisories/notices.