SKU:WSAL31282

Industrial 8-Channel ESP32-S3 WiFi Relay Module, Onboard isolated CAN interface, Built-in Xtensa 32-bit LX7 Dual-core Processor, Up To 240MHz, With Multiple Isolation Protection Circuits

Industrial 8-Ch ESP32-S3 WiFi Relay Module

Based on ESP32-S3, Supports WiFi / Bluetooth

Onboard Digital input, CAN, and ethernet port interfaces. Built-in protection circuits such as power isolation and optocoupler isolation, Safe & Stable & Reliable

Version options

ESP32-S3-ETH-8DI-8RO-C Common network port + isolated CAN8-ch digital inputs + 8-ch relays

ESP32-S3-POE-ETH-8DI-8RO-C PoE network port + isolated CAN8-ch digital inputs + 8-ch relays

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 superior RF performance
• High quality relay, contact rating: ≤10A 250V AC / 30V DC
• Supports passive and active digital input, with bi-directional optocoupler isolation. The relay supports digital input linkage control
• 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
• Optional for PoE network port version, with built-in PoE module for PoE capability (compliant with IEEE 802.3af standard)
• Onboard optocoupler isolation to prevent interference from external high-voltage circuit connected to the relay
• 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 and CAN TX/RX indicators for monitoring the operating status of the devices
• Rail-mounted ABS case, easy to install, safe to use

Specifications

Version		ESP32-S3-POE-ETH-8DI-8RO	ESP32-S3-POE-ETH-8DI-8RO-C
Microcontroller	ESP32-S3 (Default module: ESP32-S3-WROOM-1U-N16R8, customizable for other modules)
Wireless communicatoin	2.4GHz WiFi (802.11 b/g/n)、Bluetooth 5, BLE
USB	Connector	USB Type-C
	Power supply	5V
	Functions	Power supply, USB communication, firmware downloading, etc.
isolated comm interface	Interface	RS485	CAN
	Connector	Screw terminal
	Direction control	Hardware automatic control
	Protection	TVS diode, surge protection & ESD protection
	Resistor	Onboard reserved 120R matching resistor, NC by default, enabled via jumper
Ethernet interface	PoE Ethernet port, supports IEEE 802.3af standard (for PoE port version only)
Digital input	Input channels	8
	Input voltage	5V~36V
	Input type	Passive input / active input (NPN or PNP type)
	Isolation type	Bi-directional optocoupler isolation
Relay	Contact rating	≤10A 250V AC / 30V DC
	Relay channels	8
	Contact form	1NO 1NC
	Isolation	Optocoupler isolation
LED indicators	RGB	RGB colorful LED, supports programmable control of display color
	PWR	Red power indicator, lights up when there is USB connection and voltage is detected
	TXD	Green TX indicator, lights up when the RS485/CAN port sends data
	RXD	Blue RX indicator, lights up when the device port sends data back
power supply Screw terminal	Voltage range	7~36V
Appearance	Enclosure	Rail-mount ABS protective case
	Dimensions	175 × 90 × 40 (mm)

Based on ESP32-S3, Designed for AIoT market

Equipped with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz, with Powerful AI Computing Performance and Security Encryption Mechanism; Integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode wireless communication

Onboard multiple isolation protection circuits

Multiple protections, more safe and reliable

supports CAN and Bluetooth / WIFi remote control

Onboard 8-ch relays and 8-ch digital inputs Contact rating of the onboard relay up to 10A 250V AC / 30V DC Directly controlling 220VAC home appliances, or devices below 30V DC

Digital input

Supports passive (dry contact) and active (wet contact) digital input, with bi-directional optocoupler isolation

Application scenarios

Supports Arduino IDE

Comprehensive SDK, Dev Resources, And Tutorials To Help You Easily Get Started

Optional for PoE function

built-in PoE module, providing both network connection and power supply in one cable

* the PoE function is only available on ESP32-S3-POE-ETH-8DI-8RO-C version, and the switch shown in the picture is NOT included.

Application Examples

Provides Multiple Networking Demos With Waveshare.Cloud, Using The Lightweight MQTT Protocol To Achieve Data Visualization Service

What's On Board

1. ESP32-S3-WROOM-1U-N16R8 Adopts ESP32-S3 series chip with Xtensa 32-bit LX7 dual-core processor, built in 16MB Flash and 8MB PSRAM
2. 8-channel quality relayscontact rating per channel: ≤ 10A 250V AC or ≤ 10A 30V DC
3. Optocoupler isolationprevents interference from external high-voltage circuit connected to the relay
4. RESET button
5. PoE header supports connecting to PoE module for PoE capability (for PoE port version only)
6. BOOT button
7. Power IC
8. Digital isolationprevents interference from external signal
9. Power supply isolation provides stable isolated voltage, needs no extra power supply for the isolated terminal
10. Bi-directional optocoupler isolation
11. RTC battery holder 1220 size (12mm diameter*2mm thickness), supports only rechargeable 3V~3.3V Batt.
12. Buzzer
13. Digital input screw terminals

14. Pin headerfor connecting other devices
15. LED indicators PWR: power indicator RXD: CAN RX indicator TXD: CAN TX indicator
16. USB Type-C connector for module power supply, firmware downloading and USB communication
17. WS2812 RGB LED controllable via GPIO38
18. Ethernet port
19. External antenna connector SMA female connector, for WiFi and Bluetooth wireless communication
20. Power supply screw terminal supports DC 7~36V wide voltage input
21. CAN comm interface for connecting to external CAN devices
22. CAN matching resistor jumper onboard reserved 120R matching resistor, enabled via jumper
23. Relay screw terminals

24. Onboard TVS (Transient Voltage Suppressor) can effectively suppress surge voltage and transient spike voltage in the circuit
25. CAN conversion chip
26. MP1605GTF-ZDC-DC power module
27. PCF85063ATLRTC chip, can achieve some scheduled tasks

28. TCA9554PWRGPIO expansion chip
29. W5500for extending 10/100Mbps network port through SPI interface
30. TF card slotsupports external TF card storage for images and files

Enclosure Design

ABS Protection Enclosure With 35mm Rail-Mount Support, Easy To Install, Safe To Use

Outline dimensions

Common network port

PoE network port

Support Batch Customization

Support software and hardware customizationIncluding hardware interface, LOGO, label, case and web page, etc.

Resources & Services

Wiki:www.waveshare.com/wiki/ESP32-S3-ETH-8DI-8RO-C

Selection guide

Model	DI	DO	Relay	RS485	CAN	network port	PoE	RTC	buzzer	TF	antenna	PIN header
ESP32-S3-Relay-6CH	-	-	6	√	-	-	-	-	√	-	√	40PIN header, compatible with Raspberry Pi Pico interface, 2.54mm pitch
ESP32-S3-ETH-8DI-8RO	8	-	8	√	-	√	-	√	√	√	√	28PIN header, 2.54mm pitch
ESP32-S3-POE-ETH-8DI-8RO	8	-	8	√	-	√	√	√	√	√	√	28PIN header, 2.54mm pitch
ESP32-S3-ETH-8DI-8RO-C	8	-	8	-	√	√	-	√	√	√	√	28PIN header, 2.54mm pitch
ESP32-S3-POE-ETH-8DI-8RO-C	8	-	8	-	√	√	√	√	√	√	√	28PIN header, 2.54mm pitch
ESP32-S3-POE-ETH-8DI-8DO	8	8	-	√	√	√	√	√	√	√	√	8PIN screw terminal, 5.0mm pitch
ESP32-S3-Relay-1CH	-	-	1	√	-	-	-	√	-	-	√	20PIN header, 2.54mm pitch
ESP32-S3-RS485-CAN	-	-	-	√	√	-	-	√	-	-	√	20PIN header, 2.54mm pitch

Lieferumfang

ESP32-S3-ETH-8DI-8RO-C

1. ESP32-S3-ETH-8DI-8RO-C × 1
2. 2.4G 4DB SMA antenna × 1
3. Screwdriver × 1

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2

3

ESP32-S3-POE-ETH-8DI-8RO-C

1. ESP32-S3-POE-ETH-8DI-8RO-C × 1
2. 2.4G 4DB SMA antenna × 1
3. Screwdriver × 1

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2

3

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