---
title: "ESP32-S3-POE-ETH-8DI-8DO"
url: "https://maker.wiznet.io/viktor/resellers/esp32-s3-poe-eth-8di-8do/"
markdown_url: "https://maker.wiznet.io/viktor/resellers/esp32-s3-poe-eth-8di-8do/md"
type: "VAR: Value-Added Reseller Products"
author: "Waveshare"
author_url: "https://www.waveshare.com/esp32-s3-poe-eth-8di-8do.htm"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Waveshare"
original_url: "https://www.waveshare.com/esp32-s3-poe-eth-8di-8do.htm"
published: "2025-08-22"
language: "en"
hardware: ["WIZnet W5500"]
likes: 0
views: 3236
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# ESP32-S3-POE-ETH-8DI-8DO

> ndustrial ESP32-S3 Control Board With 8-Channel Digital Input & Output, Built-in Xtensa 32-bit LX7 Dual-core Processor, Up To 240MHz,

Original author: Waveshare (source: https://www.waveshare.com/esp32-s3-poe-eth-8di-8do.htm)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Article

### Introduction

The **ESP32‑S3‑POE‑ETH‑8DI‑8DO** is a versatile industrial control board built around the high-performance **ESP32‑S3 microcontroller**, featuring dual-core Xtensa LX7 CPUs (up to 240 MHz). It integrates multiple communication interfaces—**Wi-Fi**, **Bluetooth LE**, **Ethernet** (via W5500 and optionally PoE), **RS485**, **CAN**, as well as **8 isolated digital inputs and 8 outputs**, all protected by comprehensive isolation circuits. The board is enclosed in a rail-mountable ABS case, making it well-suited for industrial settings

![Industrial ESP32-S3 Control Board With 8-Channel Digital Input & Output, front view](https://www.waveshare.com/img/devkit/accBoard/ESP32-S3-POE-ETH-8DI-8DO/ESP32-S3-POE-ETH-8DI-8DO-details-1.jpg)

### Features

- Based on ESP32-S3 microcontroller with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz

- Integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode wireless communication, with excellent RF performance

- The outputs adopt Darlington transistors with optocoupler isolation, delivering higher drive capability with a sink current of up to 500 mA, and feature built-in flyback diode protection

- Supports passive and active digital input, with bi-directional optocoupler isolation. The digital output supports digital input linkage control

- Onboard isolated RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors

- Onboard isolated CAN interface, for connecting to various CAN devices

- Onboard pin header, allowing access to other devices

- Onboard USB Type-C port for power supply, firmware downloading and debugging

- Onboard power supply screw terminal, supports 7~36V wide voltage input, suitable for industrial applications

- Onboard RTC chip, supports scheduled tasks

- Onboard W5500 Ethernet chip for extending 10/100Mbps network port through SPI interface

- Built-in PoE module for PoE capability (compliant with IEEE 802.3af standard)

- Onboard optocoupler isolation to prevent interference from external circuit

- Onboard digital isolation to prevent interference from external signal

- Onboard unibody power supply isolation, providing stable isolated voltage, no extra power supply required for the isolated terminal

- Onboard TF card slot for external TF card storage of images and files

- Built-in buzzer, RGB LED, power supply, RS485 and CAN TX/RX indicators for monitoring the operating status of the devices

- Rail-mounted protective case, easy to install, safe to use

### Application Scenarios

![](https://maker.wiznet.io/upload/ckeditor5/860798706%5F1756314276%2Ejpg)

![](https://maker.wiznet.io/upload/ckeditor5/860798706%5F1756314287%2Ejpg)

### Board introduction

![](https://maker.wiznet.io/upload/ckeditor5/860798706%5F1756314307%2Ejpg)

![](https://maker.wiznet.io/upload/ckeditor5/860798706%5F1756314335%2Ejpg)

### Similar Products

[ESP32-S3-ETH-8DI-8RO-C](https://www.waveshare.com/esp32-s3-eth-8di-8ro-c.htm?sku=31282)

## Industrial 8-Channel ESP32-S3 WiFi Relay Module, Onboard Isolated CAN Interface, Built-in Xtensa 32-bit LX7 Dual-core Processor, With Multiple Isolation Protection Circuits

![](https://maker.wiznet.io/upload/ckeditor5/860798706%5F1756314491%2Ejpg)

![](https://maker.wiznet.io/upload/ckeditor5/860798706%5F1756314511%2Ejpg)

---

Source: https://maker.wiznet.io/viktor/resellers/esp32-s3-poe-eth-8di-8do/