Waveshare ESP32-S3-POE-ETH-8DI-8DO Control Board With 8-Channel Digital Input & Output, Built-In Xtensa 32-Bit LX7 Dual-Core Processor

Powerful connectivity. Reliable control. Flexible industrial automation.

Bring smart control and industrial connectivity together with this ESP32-S3 Industrial IoT Controller, a versatile development and automation board designed for monitoring, equipment control, and network-connected applications. Built around a dual-core 32-bit ESP32-S3 processor, it combines wireless communication, wired Ethernet with PoE, isolated digital inputs and outputs, and industrial RS485 and CAN interfaces in one compact DIN-rail-mountable unit.

Whether you're developing a smart factory system, integrating industrial sensors, automating equipment, or building a custom IoT solution, this controller provides a flexible platform for connecting devices and managing real-world signals.

Key Features

🚀 Powerful ESP32-S3 Processing

Powered by the ESP32-S3 microcontroller, featuring a dual-core Xtensa LX7 32-bit processor operating at up to 240 MHz. The platform supports responsive control logic, embedded applications, and network-connected automation tasks.

📶 Wi-Fi & Bluetooth 5 LE Connectivity

Integrated 2.4 GHz Wi-Fi and Bluetooth Low Energy provide convenient wireless connectivity for IoT applications, device configuration, data exchange, and remote monitoring.

• Wi-Fi: IEEE 802.11 b/g/n, 2.4 GHz

• Bluetooth: Bluetooth 5 Low Energy

🌐 Ethernet with PoE Support

The onboard W5500 Ethernet controller provides wired network connectivity at 10/100 Mbps through an SPI interface. The Ethernet port supports Power over Ethernet compliant with IEEE 802.3af, helping simplify installation where a compatible PoE network source is available.

🔌 8 Isolated Digital Outputs

Control external equipment through eight open-collector digital output channels. Each channel supports a maximum sink current of 500 mA, making the board suitable for interfacing with compatible control circuits, relays, and other industrial loads.

Optocoupler isolation helps protect the controller from electrical interference. Integrated freewheeling diode protection helps manage inductive load transients when used as specified by the manufacturer.

Output specifications:

• 8 digital output channels

• Open-collector output type

• Load current: up to 500 mA per channel

• Supported output voltage range: 5–40 V

• Optocoupler isolation

Observe the manufacturer's wiring instructions and load limitations. The 500 mA rating is a per-channel maximum, not necessarily a guaranteed simultaneous total for all eight channels.

📥 8 Flexible Digital Inputs

Connect external switches, sensors, and control signals through eight bidirectionally optocoupler-isolated digital input channels.

The inputs support both passive and active signal configurations, including compatible NPN- and PNP-type devices.

• 8 digital input channels

• Input voltage range: 5–36 V

• Passive and active input support

• Bidirectional optocoupler isolation

🏭 Industrial RS485 & CAN Interfaces

Integrate the controller with compatible industrial equipment, sensors, and expansion modules using isolated RS485 and CAN interfaces.

• RS485: Suitable for compatible Modbus RTU devices and industrial communication networks.

• CAN: Enables connection to compatible CAN-based devices and systems.

• Interface protection: TVS diode protection against specified transient and electrostatic events.

• Termination: Reserved 120 Ω matching resistors, disabled by default and configurable using jumper caps.

Isolation helps reduce the impact of electrical interference between external interfaces and the main control circuitry.

⚡ Flexible Power Supply

Choose the power input method that suits your installation.

• Screw-terminal power input: 7–36 V DC

• USB Type-C input: 5 V

• Ethernet power: PoE through a compatible IEEE 802.3af source

The integrated isolated power circuitry supplies the isolated interface terminals without requiring a separate external power supply for those isolated circuits, subject to the board's specified operating conditions.

⏰ Real-Time Clock for Scheduled Tasks

An onboard RTC clock chip supports time-based operations, scheduling, and automation routines. This is useful for applications requiring timed control or event logging; time retention and synchronization depend on the board's RTC backup arrangement and software configuration.

💾 MicroSD Storage & Expansion Headers

The onboard MicroSD card slot provides additional storage for supported files, logs, and application data. Header pins allow integration with compatible peripherals and custom hardware extensions.

💡 Clear Status Indicators & Audible Feedback

Monitor operating conditions through onboard status components:

• RGB indicator: Customizable color indication

• PWR: Red power-status indicator when USB power is detected

• TXD: Green transmission indicator for RS485/CAN activity

• RXD: Blue reception indicator for RS485/CAN activity

• Buzzer: Audible feedback for supported applications

🛠️ USB-C Development & Debugging

The USB Type-C port supports board power, USB communication, and firmware downloading, simplifying development, programming, and troubleshooting.

🧰 DIN-Rail Mounting for Industrial Installations

The protective enclosure is designed for DIN-rail mounting, helping organize the controller inside compatible control cabinets and automation panels.

Technical Specifications

Typical Applications

• Industrial equipment monitoring and control

• Smart factory and production automation

• Modbus RTU sensor and device integration

• CAN-based system connectivity

• Building automation and environmental monitoring

• Network-connected relay and switch control

• IoT gateways and custom embedded projects

• Data logging and scheduled automation

Why Choose This ESP32-S3 Industrial Controller?

Combine wireless convenience with wired industrial communication in a single versatile platform. With eight isolated inputs, eight isolated outputs, Ethernet with PoE support, RS485, CAN, an RTC, and MicroSD expansion, this controller offers a strong foundation for custom automation and IoT development.

Build smarter, connect more devices, and bring your industrial IoT ideas to life.

Package contents: Please refer to the supplier's confirmed package list for the included controller, enclosure, terminal accessories, and any additional components.

Compatibility note: This is a development and control board intended for users with appropriate electronics and programming knowledge. External power supplies, sensors, relays, network equipment, and other accessories may be required and are not assumed to be included.