> **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 serial server, RS485 to RJ45 Ethernet, TCP/IP to serial(with POE function)

**Type:** Product page · **SKU:** WS-23273 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/waveshare-industrial-serial-server-with-poe.html ([markdown](https://core-electronics.com.au/waveshare-industrial-serial-server-with-poe.html.md))

Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional) | RS485 TO ETH (B)...

## Pricing

- **Price:** $38.50 (inc GST) — $35.00 AUD, exc GST
- **Quantity discounts:** 10+ $33.60 (exc GST) · 25+ $32.55 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 15 today, and up to 300 more in 12–19 days.

## How to buy

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- **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

Connect RS485 devices directly to Ethernet networks with this compact industrial serial server that offers optional Power over Ethernet (PoE) support. Its DIN-rail mount design and transparent TCP/IP-to-serial operation make it ideal for remote monitoring and seamless integration of legacy equipment into modern IoT systems.

Whether you need a reliable Modbus gateway in a factory environment or a JSON-enabled IoT bridge for intelligent instrument monitoring, this module combines robust hardware isolation with flexible power options to simplify installation and ensure uninterrupted data flow.

### Technical Specifications

- **Serial interface:** 1 × isolated RS485 port
- **Ethernet:** 1 × PoE RJ45 port (IEEE 802.3af), 10/100 Mbps auto-negotiation, 2 kV surge protection
- **Protocols:** Bi-directional transparent serial data, Modbus TCP/RTU gateway, MQTT gateway, RS485-to-JSON conversion
- **Baud rate:** 300 – 115 200 bps
- **Data format:** 5 – 9 bits with none, odd, even, mark or space parity
- **Power supply:** 6 – 36 V DC via screw terminals or PoE
- **Isolation:** Power isolation and signal isolation for industrial safety
- **Mounting:** 35 mm DIN-rail case, compact footprint for tight control cabinets
 
### How to Use/Installation

1. Clip the unit onto a standard 35 mm DIN rail inside your control panel.
2. Connect a PoE-capable switch or injector to the RJ45 port, or wire 6 – 36 V DC to the screw-terminal power input.
3. Wire your RS485 A/B lines to the isolated terminal block, observing correct polarity.
4. Access the built-in web interface via its default IP address to configure TCP/IP settings and serial parameters.
5. Save your settings and test data flow between your Modbus master or MQTT broker and the RS485 device.
 
### Compatibility

- Modbus RTU/ASCII masters and slaves
- MQTT brokers such as Mosquitto or HiveMQ
- JSON parsers and HTTP clients
- IEEE 802.3af PoE switches and injectors
- Standard 35 mm DIN-rail mounting systems
 
### What’s Included

- RS485 to PoE Ethernet serial server module
- Removable screw-terminal blocks
- DIN-rail mounting clip
- Quick-start guide
 
### Resources

- [Waveshare Wiki - RS485 TO POE ETH (B)](https://www.waveshare.com/wiki/RS485_TO_POE_ETH_(B))

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-23273-1.jpg)