> **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

# 8-Channel RS485 to RJ45 Ethernet Serial Server (PoE, Isolated, Rail-Mount)

**Type:** Product page · **SKU:** WS-31078 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/waveshare-8-channel-rs485-to-rj45-ethernet-serial-server-poe-isolated-rail-mount.html ([markdown](https://core-electronics.com.au/waveshare-8-channel-rs485-to-rj45-ethernet-serial-server-poe-isolated-rail-mount.html.md))

Industrial-grade 8-channel RS485-to-Ethernet serial server with dual RJ45 ports and PoE (IEEE 802.3af). Each of the eight RS485 channels operates independently; the rail-mount metal enclosure suits makes it easy to integrate into control cabinets.

## Pricing

- **Price:** $127.42 (inc GST) — $115.84 AUD, exc GST

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 17 and Oct 12.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-31078:1` (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-31078:1.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

An industrial-grade serial device server and IoT gateway that bridges eight independent RS485 channels to Ethernet. Each RS485 port can be configured with its own baud rate and operates without crosstalk, making it well suited to data acquisition, IoT gateways, safety and security monitoring, and intelligent instrumentation.

### Key Features

- Eight independent, isolated RS485 ports (each configurable; simultaneous transmit and receive)
- Dual 10/100M RJ45 Ethernet ports for network communication and cascading; PoE support on this version (IEEE 802.3af)
- Operating modes: TCP server, TCP client (coexisting with the server), UDP, and UDP multicast
- Multi-function gateway: serial server, Modbus gateway, MQTT gateway, and RS485-to-JSON conversion
- Flexible power: PoE, or DC 7–36V via screw terminal
- Robust protection: power and signal isolation, 2kV surge suppression, TVS diodes, resettable fuse, and ESD protection
- Rugged sand-blasted, anodised aluminium enclosure; DIN-rail or wall mountable
- NTP time synchronisation, web-browser configuration, DHCP/DNS support, and user-defined heartbeat/registration packets
 
Protocol and integration: supports Ethernet, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP and DNS. As an MQTT gateway, it can upload serial data to MQTT brokers; as a JSON acquisition gateway, it converts Modbus RTU or non-standard RS485 data into JSON for HTTP or MQTT posting.

### Specifications

- RS485 channels: 8 (independent, isolated)
- Ethernet: 2 x RJ45, 10/100M auto-negotiation, with PoE (IEEE 802.3af) on this version
- Baud rate: 300–115200 bps; data bits 5–9; parity none/odd/even/mark/space
- Power: PoE or DC 7–36V (screw terminal)
- Operating temperature: -40°C to 85°C; humidity 5–95% RH
- Dimensions: 93 x 103.5 x 29.7 mm
- Isolation: power and signal isolation
 
### Resources

- Wiki

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-31078_ecommerce_1785218496325.jpg)