The Waveshare 31282 is the ESP32-S3-ETH-8DI-8RO-C which is an 8-channel ESP32-S3 WiFi Relay Module with common network Port, onboard Isolated CAN Interface, and built-in Xtensa 32-bit LX7 Dual-core Processor with multiple Isolation protection circuits.
Part #: ESP32-S3-ETH-8DI-8RO-C is supplied.
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.
ESP32-S3-ETH-8DI-8RO-C ESP32-S3-POE-ETH-8DI-8RO-C
Common network port + isolated CAN PoE network port + isolated CAN
8-ch digital inputs + 8-ch relays 8-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:
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Version |
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Microcontroller |
ESP32-S3 (Default module: ESP32-S3-WROOM-1U-N16R8, customizable for other modules) |
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Wireless communication |
2.4GHz WiFi (802.11 b/g/n) Bluetooth 5, BLE |
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USB |
Connector |
USB Type-C |
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Power supply |
5V |
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Functions |
Power supply, USB communication, firmware downloading, etc. |
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Isolated comm interface |
Interface |
RS485 |
CAN |
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Connector |
Screw terminal |
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Direction control |
Hardware automatic control |
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Protection |
TVS diode, surge protection & ESD protection |
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Resistor |
Onboard reserved 120Ω matching resistor, NC by default, enabled via jumper |
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Ethernet interface |
PoE Ethernet port, supports IEEE 802.3af standard (for PoE port version only) |
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Digital input |
Input channels |
8 |
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Input voltage |
5V~36V |
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Input type |
Passive input / active input (NPN or PNP type) |
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Isolation type |
Bi-directional optocoupler isolation |
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Relay |
Contact rating |
≤10A 250V AC / 30V DC |
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Relay channels |
8 |
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Contact form |
1NO 1NC |
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Isolation |
Optocoupler isolation |
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LED indicators |
RGB |
RGB colorful LED, supports programmable control of display color |
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PWR |
Red power indicator, lights up when there is USB connection and voltage is detected |
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TXD |
Green TX indicator, lights up when the RS485/CAN port sends data |
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RXD |
Blue RX indicator, lights up when the device port sends data back |
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Power supply Screw Terminal |
Voltage range |
7~36V |
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Appearance |
Enclosure |
Rail-mount ABS protective case |
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Dimensions |
175 × 90 × 40 (mm |
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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.
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.
