Micro850 Expansion I/O

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


  • Provides additional analog I/O,  digital I/O and specialty capabilities
  • Offers removable terminal blocks for ease of installation, maintenance and wiring
  • Supports as many as 132 I/O points on each Micro850™ controller (maximum of 4 expansion I/O modules)


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