The Waveshare 31130 is the ESP32-S3-ETH-8DI-8RO which is an industrial 8-Channel ESP32-S3 WiFi Relay Module, Onboard isolated RS485 interface, Built-in Xtensa 32-bit LX7 Dual-core Processor, With Multiple Isolation Protection Circuits.
Common network port device part #: ESP32-S3-ETH-8DI-8RO is supplied.
Industrial 8-Ch ESP32-S3 WiFi Relay Module
Based on ESP32-S3, Supports WiFi / Bluetooth
Onboard Digital input, RS485, and ethernet port interfaces. Built-in protection circuits such as power isolation and optocoupler isolation, Safe & Stable & Reliable
- 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 RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors
- 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 RS485 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 communicatoin |
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 120R 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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for AIoT market
Supports RS485 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
Supports passive (dry contact) and active (wet contact) digital input, with bi-directional optocoupler isolation
Designations
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 relays
contact rating per channel: ≤ 10A 250V AC or ≤ 10A 30V DC
3. Optocoupler isolation
prevents 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 isolation
prevents 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
12. Buzzer
13. Digital input screw terminals
14. Pin header
for connecting other devices
15. LED indicators
PWR: power indicator
RXD: RS485 RX indicator
TXD: RS485 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. RS485 comm interface
for connecting to external RS485 devices
22. RS485 matching resistor jumper
onboard reserved 120R matching resistor, enabled via jumper
23. Relay screw terminals
Designations:
24. Onboard TVS (Transient Voltage Suppressor)
can effectively suppress surge voltage and transient spike voltage in the circuit
25. RS485 conversion chip
26. MP1605GTF-Z
DC-DC power module
27. PCF85063ATL
RTC chip, can achieve some scheduled tasks
28. TCA9554PWR
GPIO expansion chip
29. W5500
for extending 10/100Mbps network port through SPI interface
30. TF card slot
supports external TF card storage for images and files
