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groov RIO brings IIoT connectivity to traditional I/O, no matter where it resides

Before you can read even one field I/O data point, you have to meet precise technical requirements and environmental factors. groov RIO simplifies both with flexible installation options and industrial-grade hardware that let you get to work faster.


Usually, I/O integration requires specifying an exact interface; designing a custom electrical panel for signal, power, and network distribution; and installing additional connectivity hardware. groov RIO’s installation options take the guess-work, time, and cost out of this process:

  • 8 software-configurable multi-signal, multifunction I/O channels:
    • Analog input sensing (V/mV/mA/Ohm*)
    • Temperature sensing (ICTD, TC B/E/J/K/N/R/S/T, thermistor*)
    • Discrete input sensing (DC input or powered switch input)
    • Analog output control (V/mA)
    • Discrete output control (DC sinking)
  • 2 mechanical Form C relays for normally-open or normally-closed circuits
  • Thousands of Field I/O Combinations supported
  • Two power sources: Power over Ethernet or 10-32 VDC input
  • Internal loop power distribution for analog control outputs and powered switch inputs
  • Built-in DIN rail and panel mounting hardware
  • Two switched gigabit Ethernet network interfaces that support star (with PoE) or daisy-chain (with external power) topologies
  • USB expansion port for WiFi adapter, serial device adapter, or external mass storage

Not sure which options you want? No worries. groov RIO includes all of the above—no need to decide between optional components, because we give you everything in one unit. 

*Thermistor/resistor support requires groov RIO firmware 3.0 or higher.



The way industrial devices interact with their environment can affect the safety of equipment, processes, and personnel. The more vulnerable a device is, the more work it takes to design and install appropriate protections or to isolate a device from exposure. To ensure you can capture important I/O data right at the source, groov RIO provides:
  • UL Hazardous Locations approvals (Class 1/Division 2)
  • ATEX compliance
  • Wide -20 to 70 °C operating temperature range
  • Compact 1.9” x 5.2” form factor (download CAD file
All Opto 22 products are tested through their full range of operation, so you know these are specs you can rely on.

Processing and storage

Edge I/O takes the concept of edge computing—distributed processing power in the field—and applies it to the difficult job of collecting, processing, and publishing remote I/O signals. groov RIO provides:

  • An industrial ARM® processor, 1 GB RAM, and 4 GB user space (or 2 GB RAM and 7 GB user space with GRV-R7-MM2001-10) on industrial eMMC with a power-fail-safe filesystem.
  • Expandable local data and file storage via USB host port
  • Per-channel intelligent analog and discrete signal processing, including scaling, ramping, filtering, counting, TPO, frequency/period measurement, on-/off-time totalization, and more
  • Advanced data formatting, sanitization, and aggregation through the embedded Node-RED IoT programming environment

Explore groov RIO field I/O Combinations (thousands of them!)
See the groov RIO data sheet 
See groov RIO product pages: GRV-R7-MM1001-10 and GRV-R7-MM2001-10
Download the groov RIO product brochure.
Download groov RIO CAD files

Questions? Contact an Opto 22 engineer.

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Questions? Contact an Opto 22 engineer.

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