Our most popular Notecard got an update. Learn more about the new Notecard Cellular.

The Easy and Flexible Opta PLC

Combined with Streamlined Device to Cloud Connectivity

Enhance Your Opta Solution with Wireless Connectivity

Elevate your operational intelligence by adding wireless connectivity to your Opta solution and the ability to daisy-chain it with other Opta Expansion modules.

Connectivity Tailored to Your Needs

Offered in two configurations: A Cell+WiFi and LoRa variant, allowing you to customize connectivity based on your solution and environment.

Effortless Data Routing to Any Cloud

Route your data to any cloud, including the Arduino IoT Cloud, AWS, Azure, GCP, Snowflake, and more, using Notehub’s intuitive “no code” interface.

Fast-Track Your Time to Market

With pre-provisioned connectivity and an intuitive, low-code JSON interface, reduce your time to market from years to months.

Industry-Leading Security

End-to-end security from devices authenticated through an integrated secure element to dataflows using encrypted communications and VPN tunnels.

Power Outage Detection To Reduce Downtime

An onboard backup power supply allows the Expansion to detect outages and send operators outage alerts, ensuring rapid response and uninterrupted operations.

Powered by the Notecard

Available in 2 Configurations

Notecard Cell+WiFi

Global Pre-Paid Cell Communication: Includes LTE Cat 1 coverage with 500MB of pre-paid data and 10 years of service in over 139 countries with no activations or monthly commitments.

Automatic Failover: Dual Wi-Fi and cellular connectivity with automatic failover that switches to the secondary network during primary network disruptions.

Notecard LoRa


Global LoRaWAN Coverage: Compatible with all layers of the LoRa network, including LoRaWAN and The Things Network.

Ultra-Low-Power Design: Operate for years on a battery and even extend battery life with sleep mode, which can wake up on sensor events.

Be Among the First to Build with the Wireless for Opta

Join the waitlist, and we’ll notify you when it's available.

The Arduino Opta®
A microPLC with Industrial IoT Capabilities

Arduino’s Opta is a secure and easy-to-use micro-PLC with IIoT capabilities that supports Arduino’s intuitive programming experience along with PLC standard languages.

Developed in partnership with Finder®, the Opta is designed to allow you to effortlessly scale your automation projects while taking advantage of the open and widely known Arduino ecosystem.

Build Powerful IIoT Applications

The Opta’s STM32H747XI dual-core Arm® Cortex®-M7 +M4 MCU allows users to perform real-time control, monitoring, and implement predictive maintenance applications.

One Great PLC, Three Configurations

Discover the versatility of the Opta with three configurations:  the Opta Lite, Opta RS485, and Opta WiFi.

Faster Turnaround

Get to work quickly with Arduino’s ease of use, flexibility, and extensive software libraries.

Easy PLC Programming

Pair with the Arduino PLC IDE to easily program with any of the 5 IEC 61131-3 languages.

Secure Under Every Respect

With onboard secure element, X.509 Standard compliance, and regular cybersecurity assessments.

How it Works


Connect the Wireless for Opta Expansion to your Opta PLC via a 10-pin AUX connector.


Set up the Expansion in minutes using the Notecard’s award-winning hardware and firmware interface.


Create bi-directional dataflow from your PLC through Notehub to your cloud app.

But Don’t Take Our Word For It, Hear What Our Customers Had to Say

I like working with Blues because it solves several very important problems for me that I no longer have to worry about.

Danny Wilson

Founder & CEO of Geocene

By using the Blues platform, we saved about 12 months of R&D time, getting us to market about a year sooner.

Jamie Fox

Director, Technology & CRM at Tekion