> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Industrial 8-Channel RP2350 Relay Module (Ethernet + Isolated RS485) **Type:** Product page · **SKU:** WS-32452 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia) **Page:** https://core-electronics.com.au/waveshare-industrial-8-channel-rp2350-relay-module-ethernet-isolated-rs485.html ([markdown](https://core-electronics.com.au/waveshare-industrial-8-channel-rp2350-relay-module-ethernet-isolated-rs485.html.md)) Bring programmable switching to a DIN rail - high-power relays, isolated field inputs and a wired network connection in one unit. ## Pricing - **Price:** $71.22 (inc GST) — $64.75 AUD, exc GST ## Availability & dispatch - Available with a lead time — expect dispatch between Sep 21 and Sep 28. ## Restrictions Restrictions apply to this equipment as it uses button/coin cell batteries: - The equipment is intended to be used in trades, professions or industries - The equipment is not intended for sale to the general public - The equipment is not intended to be used where children are present - You are aware that this equipment may not meet child safety testing requirements as it is not intended to be used by consumers or general public, but rather, is intended to be used in trades, professions or industries in conjunction with the limitations and restrictions listed above - You are aware that these restrictions are due to a change in [A](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence)[ustralian legislation in 2022](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence) for button/coin cell batteries ![Button Battery Warning](https://core-electronics.com.au/attachments/uploads/iec-button-battery.png) A declaration of use will need to be submitted during checkout. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-32452:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/WS-32452:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description Eight relay channels and eight isolated digital inputs, driven by a Raspberry Pi RP2350B and addressable over Ethernet or isolated RS485. Wiring a microcontroller into real switchgear usually means stacking a dev board, a relay board, an isolator and a network adaptor, then finding somewhere to mount the pile. This puts the lot inside one 175 x 90 x 40mm ABS enclosure that clips straight onto 35mm DIN rail. Isolation is handled at every boundary: optocouplers between the microcontroller and the relay drivers, bi-directional optocouplers on the digital inputs so they accept both dry and wet contacts, digital isolation on the RS485 line, and unibody power isolation that generates the isolated rail on-board - no separate supply needed for the isolated side. Each relay is rated to 10A at 250V AC or 30V DC, with both normally-open and normally-closed contacts brought out to screw terminals. Power comes from a 7~36V screw terminal, and programming is drag-and-drop over USB-C. Waveshare provide networking demos that publish over lightweight MQTT and HTTP, and the board is supported by the C/C++ SDK, MicroPython and the Arduino IDE. ### Features - Switch AC or DC loads directly - each of the eight relays handles up to 10A at 250V AC or 30V DC, with 1NO/1NC contacts on every channel - Read field signals safely - eight digital inputs accept 5~36V from either passive dry contacts or active NPN/PNP sensors, behind bi-directional optocoupler isolation - Relays support digital-input linkage control, so interlock behaviour keeps running locally even if the network drops - Talk to existing plant over isolated RS485 - hardware automatic direction control, TVS diode, surge and ESD protection, and a 120R termination resistor you can enable with a jumper - Wired networking without a second board - an onboard W5500 provides a 10/100Mbps Ethernet port over SPI, so there is no wireless link to lose inside a metal cabinet - Choose Arm or RISC-V on the same silicon - the RP2350B runs dual Cortex-M33 or dual Hazard3 cores at up to 150MHz, with 520KB of SRAM and 16MB of onboard flash - Keep time and run scheduled tasks unattended - onboard PCF85063ATL RTC with a 1220 rechargeable cell holder - Log data or store assets locally through the onboard microSD (TF) card slot - Feed it whatever the cabinet has - 7~36V wide-range input on a screw terminal, suited to industrial supply rails - See the state of the system at a glance - programmable WS2812 RGB LED, buzzer, power indicator and RS485 TX/RX indicators - Mount it where it belongs - ABS protective enclosure with 35mm DIN rail support - Flash firmware by dragging a file onto a USB mass-storage drive, and break out 15 multi-function GPIO on the onboard pin header for everything else ### Specifications | Microcontroller | RP2350B - dual Arm Cortex-M33 or dual Hazard3 RISC-V, up to 150MHz | |---|---| | Memory | 520KB SRAM, 16MB onboard flash | | Relay channels | 8 | | Relay contact rating | 10A max, 250V AC / 30V DC | | Relay contact form | 1NO 1NC | | Relay isolation | Optocoupler | | Digital input channels | 8 | | Digital input voltage | 5~36V | | Digital input type | Passive (dry contact) or active (NPN / PNP) | | Digital input isolation | Bi-directional optocoupler | | Ethernet | 10/100Mbps, onboard W5500 over SPI | | RS485 | Isolated, screw terminal, hardware automatic direction control | | RS485 protection | TVS diode, surge protection, ESD protection | | RS485 termination | 120R onboard, not connected by default, enabled via jumper | | USB | Type-C - 5V power, communication and firmware download (USB 1.1, host and device support) | | Power input | 7~36V DC via screw terminal | | Real-time clock | PCF85063ATL with 1220 rechargeable cell holder (3~3.3V) | | Storage | microSD (TF) card slot | | Indicators | WS2812 RGB LED, buzzer, PWR, RS485 TXD and RXD | | Expansion | 15 x multi-function GPIO on pin header; 2 x SPI, 2 x I2C, 2 x UART, 8 x 12-bit ADC, 12 x PWM, 12 x PIO state machines | | Enclosure | ABS, 35mm DIN rail mount | | Dimensions | 175 x 90 x 40mm | | Weight | 303g | ### Resources - [Waveshare Wiki](https://www.waveshare.com/wiki/RP2350-ETH-8DI-8RO) - demo code, schematic, pin definitions and datasheets ### What's Included - 1x Industrial 8-Channel RP2350 Relay Module (RP2350-ETH-8DI-8RO) - 1x Screwdriver ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-32452_ecommerce_1788736182383.jpg)