Arduino Opta WiFi PLC – a professional‑grade microcontroller that merges the deterministic reliability of a Programmable Logic Controller (PLC) with the open‑source flexibility of the Arduino ecosystem. Designed for industrial automation and IoT deployments, the Opta WiFi PLC delivers robust, real‑time control, seamless Modbus communication, and secure Wi‑Fi connectivity in a compact, rugged package.

Key Specifications

• Processor: 32‑bit ARM Cortex‑M4, 120 MHz


• Memory: 256 KB SRAM, 2 MB Flash


• Connectivity: 802.11 b/g/n Wi‑Fi, Ethernet (10/100 Mbps), Modbus TCP/RTU


• I/O: 12 digital inputs, 8 digital outputs, 4 analog inputs (0‑10 V), 2 analog outputs (0‑10 V)


• Power Supply: 24 V DC industrial supply, optional battery backup


• Operating Temperature: –20 °C to 70 °C


• Compliance: CE, FCC, RoHS


• Development Environment: Arduino IDE, Ladder Logic editor, OTA firmware updates

Typical Applications

• Real‑time process monitoring and control in manufacturing lines


• Smart building automation and energy management


• Remote sensor networks for predictive maintenance


• Industrial IoT gateways integrating legacy PLCs with cloud services


• Secure access control systems with fingerprint and RFID modules


• Automated charging stations for electric vehicles and battery packs


• Custom ladder‑logic based automation for packaging, conveyor, and sorting systems