Outputs ETH module

This open-source relay control board is designed for industrial automation, IoT, and CNC applications.
It features 8 opto-isolated relays, powered at 24 VDC, with independent outputs (COM, NO, NC).
Communication is provided via Ethernet (W5500, HTTP server, MQTT client, Modbus TCP), UART (FTDI compatible), and ICSP programming interface.

The module includes a RGB LED for status/error indication, a DIP switch for self-configuration, and a web interface for easy relay control and configuration (rename relays, adjust network settings, save to EEPROM).
Compatible with Arduino IDE (MiniCore 328PB) using only standard libraries (SPI.h, Ethernet.h, EEPROM.h).

Board size: 100 × 150 mm with 4 mm fixing holes.
Typical integrations: SCADA, PLC, Node-RED, Home Assistant, OpenHAB.