---
title: "Outputs ETH module"
url: "https://maker.wiznet.io/mason/resellers/outputs-eth-module/"
markdown_url: "https://maker.wiznet.io/mason/resellers/outputs-eth-module/md"
type: "VAR: Value-Added Reseller Products"
author: "tiagogmonteiro"
author_url: "https://oshwlab.com/tiagogmonteiro/outputs-eth-module"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "tiagogmonteiro"
original_url: "https://oshwlab.com/tiagogmonteiro/outputs-eth-module"
published: "2025-09-10"
language: "en"
tags: ["W5500"]
likes: 0
views: 2835
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Outputs ETH module

> Outputs ETH module

Original author: tiagogmonteiro (source: https://oshwlab.com/tiagogmonteiro/outputs-eth-module)

## Documents and links

- [schematic diagram](https://image.easyeda.com/histories/24cc6d37a3ee4c6493758abac2dee74e.png) (schematics)

## Article

## Outputs ETH Module – Open-Source Ethernet Relay Board

The **Outputs ETH Module** is an open-source Ethernet relay board powered by the **ATmega328PB MCU** and **W5500 Ethernet chip**. It provides **8 opto-isolated relay outputs** (COM/NO/NC), making it ideal for **industrial automation, IoT, SCADA, and home automation**.

Key features include:

**Ethernet communication**: HTTP server, MQTT client, Modbus TCP

**Web interface** for easy relay control and network configuration

**Arduino IDE support** (MiniCore 328PB, standard libraries)

Compact **100×150 mm PCB**, 24 V DC power input

Compatible with **Node-RED, Home Assistant, OpenHAB, PLC systems**

With a build cost of around **$40**, the Outputs ETH Module offers a **low-cost, flexible, and reliable** solution for Ethernet-based relay control.

## **Design Drawingschematic diagram**

![](https://image.easyeda.com/histories/24cc6d37a3ee4c6493758abac2dee74e.png)

**PCB**

![](https://image.easyeda.com/histories/a6d8069ce4224b9eadc9a0d75c41293d.png)

---

Source: https://maker.wiznet.io/mason/resellers/outputs-eth-module/