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

The ESP32-S3-POE-ETH-8DI-8DO is an industrial-grade 8-channel network digital input and digital output device based on the ESP32-S3 main controller, supporting Wi-Fi, Bluetooth, RS485, CAN, and Ethernet. It features built-in power isolation, optocoupler isolation, and other protection circuits, making it suitable for AIoT control applications.

SKU	Product
32108	ESP32-S3-POE-ETH-8DI-8DO

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Features

• Based on the ESP32-S3 microcontroller, with a built-in Xtensa 32-bit LX7 dual-core processor running at up to 240MHz
• Integrated 2.4 GHz Wi-Fi and Bluetooth Low Energy (Bluetooth LE) dual-mode wireless communication
• Outputs use Darlington transistors with optocoupler isolation, with a sink current of up to 500 mA, and built-in flyback diode protection
• Digital inputs feature bidirectional optocoupler isolation, support both dry-contact and active switch inputs, and digital outputs support linkage mode control with switch inputs
• Onboard isolated RS485 interface, convenient for expanding and connecting various RS485 Modbus industrial expansion modules or sensors
• Onboard isolated CAN interface, convenient for expanding and connecting various CAN devices
• Onboard pin header interface, allowing connection of other devices
• Onboard USB Type-C interface, can be used for power supply and download/debugging, convenient for development
• Onboard power supply screw terminal, supports 7-36V wide voltage input, suitable for industrial applications
• Onboard RTC clock chip, supporting scheduled tasks
• Onboard W5500 Ethernet chip, expanding 10/100Mbps network connectivity via the SPI interface
• Onboard PoE module for Power over Ethernet (IEEE 802.3af compliant)
• Onboard optocoupler isolation, preventing external circuits from interfering with the control chip
• Onboard digital isolation to avoid external signal interference with the control chip
• Onboard integrated isolated power supply provides stable isolated voltage; the isolated side requires no additional power
• Onboard TF card slot for external storage of images or files
• Onboard buzzer, RGB LED, power, RS485 transmit/receive indicators, and CAN indicator, convenient for sensing the device's operating status
• Rail-mounted ABS protective enclosure, easy to install, safe to use

Specifications

Parameter	Value
Supply Voltage	7-36V (or 5V/1A Type-C port)
Number of Digital Output Channels	8 channels
Number of Digital Input Channels	8 channels
Wiring Port	Type-C
Communication Protocol	USB protocol
Product Dimensions	90 (H) x 175 (V) mm

Interface Introduction

• Digital Output

Control EXIO	Function
EXIO1	Control pin for digital output 1
EXIO2	Control pin for digital output 2
EXIO3	Control pin for digital output 3
EXIO4	Control pin for digital output 4
EXIO5	Control pin for digital output 5
EXIO6	Control pin for digital output 6
EXIO7	Control pin for digital output 7
EXIO8	Control pin for digital output 8

• Digital Input

Control GPIO	Function
GPIO4	Detection pin for digital input 1
GPIO5	Detection pin for digital input 2
GPIO6	Detection pin for digital input 3
GPIO7	Detection pin for digital input 4
GPIO8	Detection pin for digital input 5
GPIO9	Detection pin for digital input 6
GPIO10	Detection pin for digital input 7
GPIO11	Detection pin for digital input 8

• W5500 Ethernet Chip

Control GPIO	Function
GPIO12	ETH_INT
GPIO13	ETH_MOSI
GPIO14	ETH_MISO
GPIO15	ETH_SCLK
GPIO16	ETH_CS
GPIO39	ETH_RST

• TF Card

Control GPIO	Function
GPIO45	SD_D0
GPIO47	SD_CMD
GPIO48	SD_SCK
NC	SD_D3
NC	SD_D1
NC	SD_D2

• RS485

Control GPIO	Function
GPIO17	RS485 UART TX pin
GPIO18	RS485 UART RX pin
GPIO21	RS485 UART RTS pin

• CAN

Control GPIO	Function
GPIO2	CAN TWAI TX pin
GPIO3	CAN TWAI RX pin

• RTC

Control GPIO	Function
GPIO40	RTC_INT, interrupt pin of the RTC chip
GPIO41	RTC_SCL, I2C clock line
GPIO42	RTC_SDA, I2C data line

• RGB LED

Control GPIO	Function
GPIO38	RGB control pin

• Buzzer

Control GPIO	Function
GPIO46	Buzzer control pin

• BOOT Button

Control GPIO	Function
GPIO0	BOOT button control pin

Dimensions

Implementation Logic

Interface Description