iono arduino logo

An industrial input/output module based on Arduino

Iono Arduino industrial PLC

Iono is a work-suit for Arduino, it turns it into a PLC that combines the ease of use of the Arduino platform and the vast amount of software available for it with robust input and output electronic interfaces.

  • Power Supply
  • Relays
  • Analog I/Os
  • Digital Inputs
  • RS-485
  • DIN-Rail Case
  • CE/RoHS Compliant

A certified, industrial Arduino PLC

Iono Arduino can be employed both in industrial and residential environments, for professional applications where extreme reliability, ruggedness and compliance with technical and safety directives are required.

It is compliant with the 2014/35/EU (Low Voltage) and 2014/30/EU (EMC) CE directives, and the harmonised standards for electromagnetic compatibility (EN61000-6-2:2005), electrical safety (EN60664-1:2007), emission (EN61000-6-3:2007) as well as the RoHS directive for hazardous substances (2011/65/EU and 2015/863/EU).



Iono can be used in several ways:

As an armored Arduino

You can do anything you are able to do with an Arduino, in the same exact way, programming it with the standard Arduino IDE. You just have a more robust hardware that will help you transition from your prototipe to your final professional project.

As an Ethernet or WiFi I/O module

Combine Iono Arduino with Arduino Ethernet, Arduino Yún or Arduino Uno WiFi to have a simple network I/O module. Check the WebApp sketch that makes Iono Arduino Ethernet ready to be controlled and configured through a nice Web interface and a simple HTTP API.

As a Modbus module

Are you more at ease with Modbus devices? No problem, just upload the Modbus TCP or Modbus RTU sketches available from the libraries examples and your Iono turns into a standard Modbus module, configurable with a simple serial interface.

Of course, you can always modify the provided example sketches and add your custom logic!




Connection example

Iono Arduino custom

You can customize Iono Arduino from branding to hardware features

Find out more


On our GitHub repository you will find many open source resources and examples to use with your Iono. Remember, since Iono is just a super-sized I/O shield for a standard Arduino, you don’t need any specific library to work on it; our libraries and examples will just provide you with some handy utilities to speed up your development, including functionalities to monitor the inputs (filtering out possible noise) and control the outputs, Web APIs, Modbus support and much more.