RS232/RS485 to PoE Ethernet Serial Server

WaveshareSKU: WAV-25391
Sale price £32.20
incl. VAT
excl. VAT
Only 10 units left

Awesome Extras

WaveshareRS232/RS485 to RJ45 Ethernet Serial Server
Sale price £28.50 incl. VAT excl. VAT
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Sale price £31.90 incl. VAT excl. VAT

This PoE ethernet serial server has dual serial ports with 1-channel RS232 and 1-channel RS485, that is capable of operating simultaneously without interference, all through a single ethernet connection. It packs multiple functionalities in one device, serving as a serial server, Modbus gateway, MQTT gateway, and converter from RS232 and RS485 to JSON, making it a great choice for various projects. It is equipped with dual ethernet ports, both of which support the Power over Ethernet (PoE) function. This eliminates the need for separate power supplies and outlets and offers expanded options for how and where ethernet end devices can be placed.

Powering the device is flexible, with two methods available: a DC port (outer diameter: 5.5mm, inner diameter: 2.1mm) and a screw terminal. The compact case includes rail-mount support for easy installation. This is ideal for projects such as data acquisition, IoT gateway functions, and safety & security IoT.

We also have our standard RJ45 ethernet version here

Note: The power supply is NOT included, it is recommended to use with a 12V Power Adapter


  • Industrial Isolation
  • PoE network port
  • Modbus Gateway
  • Dual Serial Ports
  • Multi Power Supply Methods
  • RJ45 Ethernet
  • Ethernet Port Cascade
  • Rail-Mount

What's on Board


Product Type Serial server, Modbus Gateway, MQTT Gateway
Basic Function Bi-directional transparent data transmission between RS232 and RS485 to Ethernet
Communication interface 1x RS232 port, 1x RS485 port, 2x Ethernet port
Power supply DC 5.5 power port, 6 ~ 45V DC screw terminal, or PoE port
Isolation Protection Power isolation, Signal isolation
Ethernet RJ45 with PoE support, IEEE 802.3af compliant
10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection
Serial port Isolated RS232 and RS485 (the 2 channels can receive and transmit independently at the same time)
Serial Specifications
Baudrate 300 ~ 115200 bps
Parity bit None, odd, even, mark, space
Data bit 5 ~ 9 bits
Flow control N/A
Protocol Ethernet, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS
Configuration Host, web browser, device management functions library
Communication method TCP/IP direct communication, VCOM
Operating mode TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast
Environment Requirements
Operating temperature -40℃ ~ 85℃
Humidity range 5% ~ 95% relative humidity
Dimensions L x W x H: 78.0 x 72.5 x 24.2 mm



Package Contents

  • 1x RS232/RS485 TO POE Ethernet Port

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