Description
Waveshare ESP32-S3 Ethernet 8-Channel Relay & Digital Input Controller
The Waveshare ESP32-S3-ETH-8DI-8RO is an industrial-style networked control module built around the ESP32-S3 microcontroller. It combines Ethernet connectivity, wireless communication, digital inputs, and relay outputs in a single compact controller, making it suitable for automation, remote monitoring, IoT, and embedded control applications.
The unit provides 8 digital input channels for reading switches, sensors, alarms, limit switches, and other field signals, together with 8 relay output channels for switching external loads such as contactors, lamps, solenoids, pumps, motors, and other control equipment.
Its ESP32-S3 platform also makes the module suitable for custom firmware, network-based control systems, web interfaces, MQTT applications, and integration with embedded or industrial monitoring software.
Key features include:
- ESP32-S3 based controller
- 8-channel digital inputs
- 8-channel relay outputs
- Ethernet network interface
- external antenna connection
- USB interface
- RS485 communication interface
- wide-range DC power input
- screw-terminal field connections
- compact panel-mount enclosure
- suitable for wired and wireless automation projects
- programmable for custom control and monitoring applications
Typical applications include:
- industrial automation
- remote relay control
- building automation
- machine monitoring
- pump and motor control
- alarm and security systems
- smart agriculture
- IoT gateways
- factory equipment monitoring
- sensor interfacing
- home automation
- test and laboratory systems
- embedded control projects
The combination of Ethernet, RS485, relay outputs, digital inputs, and the ESP32-S3 processor makes this module particularly useful where multiple field devices need to be monitored and controlled from a local network or remote software application.
It can also be integrated with platforms and technologies such as MQTT, Modbus, HTTP, TCP/UDP, Node-RED, Python, C/C++, Arduino IDE, and custom web dashboards, depending on the firmware and communication protocols used.
For safety, relay contact ratings, digital-input voltage ranges, supply voltage, RS485 configuration, isolation specifications, and maximum load ratings should always be confirmed from the manufacturer’s documentation before connecting external equipment.
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