8-Channel Relay Module with ESP32-S3 WiFi Ethernet W5500 and CAN PoE Power Supply
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8-Channel ESP32-S3 WiFi Relay and Digital Input Module with CAN and Ethernet PoE
An advanced relay module based on the powerful ESP32-S3 chipset. Equipped with 8 relay outputs, 8 digital inputs, a CAN interface, and an Ethernet port. Thanks to built-in protections like power isolation and opto-isolation, the module is safe, stable, and reliable. An ideal solution for industrial applications, home automation, and AIoT projects.
Key Features:
- Based on the ESP32-S3 microcontroller with a dual-core Xtensa 32-bit LX7 @ 240 MHz processor
- Integrated 2.4GHz Wi-Fi and Bluetooth LE wireless connectivity
- 8 high-quality relays, contact rating: ≤10A 250V AC / 30V DC
- 8 isolated digital inputs, supporting passive and active inputs
- Built-in isolated CAN interface for communication with industrial devices
- Built-in W5500 chip for expanding with a 10/100Mbps Ethernet port
- PoE power capability (compliant with IEEE 802.3af standard)
- Built-in protections: power isolation, digital isolation, relay opto-isolation
- Powered via USB-C or a 7V~36V screw terminal
- Onboard RTC chip and a TF card slot
- LED indicators, buzzer, RESET, and BOOT buttons
- ABS enclosure designed for DIN rail mounting
Onboard Multi-Level Protection Circuits
Multi-level protections guarantee safe and reliable operation of the module in demanding conditions.
Remote Control via CAN, Bluetooth, and WiFi
Onboard 8-channel relays and 8 digital inputs. The relay contact rating of up to 10A 250VAC / 30VDC allows for direct control of 220VAC home appliances or devices powered by less than 30VDC.
Digital Inputs
Supports passive (dry contact) and active digital inputs, with bidirectional opto-isolation.
Board Description
- ESP32-S3-WROOM-1U-N16R8
ESP32-S3 series chip, dual-core Xtensa 32-bit LX7 processor, built-in 16MB Flash and 8MB PSRAM - 8-channel relays
Rating per channel: ≤ 10A 250V AC or ≤ 10A 30V DC - Opto-isolation
Prevents interference from external high-voltage circuits - RESET button
- PoE Header
For connecting a PoE module (PoE version only) - BOOT button
- Power IC
- Digital isolation
- Power supply isolation
- Bidirectional opto-isolation
- RTC battery holder
- Buzzer
- Digital input screw terminal
- Pin header
For connecting other devices - LED indicators
PWR: power indicator
RXD: CAN RX indicator
TXD: CAN TX indicator - USB Type-C connector
For power, programming, and communication - WS2812 RGB LED
Controlled by GPIO38 - Ethernet port
- External antenna connector
SMA female connector for WiFi and Bluetooth - Power supply screw terminal
Supports a wide DC input range of 7~36V - CAN communication interface
- CAN terminating resistor jumper
120R resistor, enabled via jumper - Relay screw terminals
- Onboard TVS Suppresses surge voltage and transient spikes in the circuit
- CAN converter chip
- MP1605GTF-Z DC-DC power module
- PCF85063ATL RTC chip
- TCA9554PWR GPIO expander
- W5500 Ethernet 10/100Mbps via SPI interface
- TF card slot
Dimensions
Technical Specification:
- Microcontroller: ESP32-S3 (ESP32-S3-WROOM-1U-N16R8)
- Wireless Communication: 2.4GHz WiFi (802.11 b/g/n), Bluetooth 5, BLE
- USB Interface: Type-C (power, programming, communication)
- Serial Interface: CAN (isolated, TVS protection)
- Network Interface: Ethernet Port PoE IEEE 802.3af standard
- Digital Inputs: 8 channels, 5V~36V, passive/active (NPN/PNP), opto-isolated
- Relays: 8 channels, 1NO 1NC
- Contact Rating: ≤10A 250V AC / 30V DC
- LED Indicators: RGB, PWR (power), TXD, RXD (CAN)
- Power Supply (screw terminal): 7V ~ 36V DC
- RTC Chip: PCF85063ATL
- Ethernet Controller: W5500
- Memory Card Slot: Yes, TF Card
- Enclosure: ABS, DIN rail mount
- Dimensions: 175 × 90 × 40 mm
Package Contents
- ESP32-S3-POE-ETH-8DI-8RO-C × 1
- 2.4G 4DB SMA Antenna × 1
- Screwdriver × 1
Wiki: https://www.waveshare.com/wiki/ESP32-S3-ETH-8DI-8RO
Safety
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