Resources:
Wiki: www.waveshare.com/wiki/RP2350-ETH-8DI-8RO
8-Channel RP2350 Relay Module – Dual-Core Industrial Controller with Ethernet Interface
The 8-Channel RP2350 Relay Module is an advanced industrial automation control board powered by the Raspberry Pi RP2350B dual-core microcontroller, offering superior performance, network connectivity, and reliable relay control. Engineered for industrial-grade environments, it combines Ethernet communication, multiple interface support, and high electrical isolation — making it a perfect choice for automation, IoT, and process control systems. At the core of the module is the RP2350B microcontroller designed by Raspberry Pi (UK). This unique chip supports a dual-core dual-architecture configuration, allowing operation with either dual ARM Cortex-M33 or dual Hazard3 RISC-V processors, running up to 150 MHz. The controller includes 520KB SRAM and 16MB onboard Flash memory, providing excellent processing power and stability for complex industrial applications.
The module features 8 high-quality relays rated at ≤10A 250V AC / 30V DC, each with bi-directional optocoupler isolation for protection against electrical interference. It supports both active and passive digital inputs and allows linkage control between inputs and relays for flexible automation workflows. The W5500 Ethernet chip provides 10/100 Mbps network connectivity via the SPI interface, while the optional PoE module (IEEE 802.3af compliant) allows power and data over Ethernet for simplified wiring.
Key Features
- Powerful RP2350B Microcontroller: Dual-core, dual-architecture (ARM Cortex-M33 / Hazard3 RISC-V) running up to 150 MHz.
- Ample Memory: 520KB SRAM and 16MB onboard Flash for smooth operation of industrial control applications.
- 8 High-Quality Relays: Rated ≤10A 250V AC / 30V DC with bi-directional optocoupler isolation for safe operation.
- Wide Power Supply Range: Supports 7–36V DC input for industrial systems.
- Ethernet Connectivity: Integrated W5500 chip for 10/100Mbps network access.
- Optional PoE Support: Built-in PoE module compliant with IEEE 802.3af standard.
- RS485 Interface: Isolated RS485 Modbus communication for industrial networking and sensor integration.
- Comprehensive Isolation: Optocoupler, digital, and power isolation ensure stable performance and safety.
- RTC Chip Onboard: Real-Time Clock supports timed and automated operations.
- TF Card Slot: External storage for data logging, configuration, and file management.
- Built-in Indicators: Power, RS485 TX/RX, RGB LED, and buzzer for device status monitoring.
- Multiple Communication Ports: 2xSPI, 2xI2C, 2xUART, 8x12-bit ADC, 12xPWM, and 15xGPIO.
- Programmable I/O (PIO): 12 PIO state machines for flexible peripheral customization.
- USB Type-C Interface: Supports USB 1.1 with host and sub-device modes for programming and communication.
- Industrial-Grade Design: ABS rail-mounted enclosure for easy installation and durability.
- Low Power Modes: Sleep and dormant modes for energy-efficient operation.
- Drag-and-Drop Programming: Easy firmware upload via USB mass storage.
Industrial 8-Ch RP2350 Relay Module
Based on RP2350, Supports digital input, RS485, and Ethernet port interfaces
Built-in protection circuits such as power isolation and optocoupler isolation, Safe & Stable & Reliable
Onboard Multiple Isolation Protection Circuits
supports RS485 And Ethernet Interfaces 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 operating 220VAC home appliances or devices below 30V DC.
Applications
What's On Board
- RP2350B
Dual-core and dual-architecture design, up to 150 MHz operating frequency
- PoE header
supports connecting to PoE module for PoE capability (for PoE port version only)
- RESET button
- Optocoupler isolation
prevents interference from external high-voltage circuit connected to the relay
- 8-channel quality relays
contact rating per channel: ≤ 10A 250V AC or ≤ 10A 30V DC
- Relay screw terminals
for connecting external devices
- Power supply isolation
provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Digital isolation
prevents interference from external signal
- RS485 matching resistor jumper
onboard reserved 120R matching resistor, enabled via jumper
- RS485 communication interface
for connecting to external RS485 devices
- Power supply screw terminal
supports DC 7~36V wide voltage input
- Power IC
- Digital input screw terminals
- Bi-directional optocoupler isolation
- RTC battery holder
- Buzzer
- Pin header
for connecting other devices
- LED indicators
PWR: power indicator
RXD: RS485 RX indicator
TXD: RS485 TX indicator
- BOOT button
- USB Type-C port
for programming, USB 1.1 with device and host support
- WS2812
cool RGB LED
- Ethernet port
- Onboard TVS (Transient Voltage Suppressor)
can effectively suppress surge voltage and transient spike voltage in the circuit
- RS485 conversion chip
- MP1605GTF-Z
DC-DC power module
- PCF85063ATL
RTC chip, can achieve some scheduled tasks
- W5500
for extending 10/100Mbps network port through SPI interface
- TF card slot
supports external TF card storage for images and files
Pin Definition
Dimensions
Package Content:
- RP2350-ETH-8DI-8ROx1
- Screwdriverx1
- RP2350-POE-ETH-8DI-8ROx1
- Screwdriverx1
