RS485 to RJ45 Ethernet Module with PoE

WaveshareSKU: WAV-23273
Sale price £22.20
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WaveshareRS485 to WiFi/Ethernet Module (Modbus/MQTT Gateway)
Sale price £31.90 incl. VAT excl. VAT

This PoE RJ45 Ethernet Module transmits bi-directional transparent data between RS485 and the RJ45 ethernet connection. It has many forms of communication, including TCP Server / TCP Client / UDP Mode / UDP Multicast. There is a more flexible conversion between different protocols with its MQTT/JSON To Modbus feature and a Modbus gateway support that is suitable for a Modbus gridding upgrade, that can be used with specific configuration software.

With its multi-configuration methods, NTP protocol support (used to synchronize with computer clock time sources in a network) Multi hosts roll-polling support, screw terminals for power support, a rail mount case design to combine multi-rail mounted serial servers together, and small in size for easy installation. This module is great for your transmitting and communication needs.


  • Support TCP server, TCP client, UDP mode, and UDP multicast. When acting as a TCP client, it also supports TCP server-side functions. Supports 30 TCP connections as a TCP server and 7 destination IPs as a TCP client.
  • The baud rate supports 1200~115200bps, the data bit supports 5~9 bits, and the check digit can be no check, odd check, even check, mark, or space.
  • Support the function of sending MAC address when the device is connected, which is convenient for cloud management of the device.
  • Provides a secondary development kit DLL development library for searching and configuring devices on the computer side.
  • Web browser configuration, support DHCP to obtain IP dynamically, and DNS protocol to connect domain name server address.
  • Cloud remote search for devices, the configuration of device parameters, and device program upgrades.
  • Remote viewing of the device's TCP connection status, and serial port data sending and receiving status through software. The virtual serial port
  • Supports the data monitoring function.

What's on Board


Two versions of this product are available, this version with PoE, and a standard version. Please see the table below for specification comparisons.

Model RS485 TO ETH (B) RS485 TO POE ETH (B)
Product Types Serial server, Modbus gateway, MQTT gateway
Basic Functions Realize RS485 to Ethernet bi-directional transparent transmission
Communication RS485 × 1, Network Port × 1
Power Supply Screw Terminal DC 9~24V Screw terminal DC 6~36V or PoE
Isolation No Isolation Power isolation
Signal isolation protection
Ethernet Normal Network Port PoE port
Support IEEE 802.3af standard
10 / 100M self-adaptive RJ45 port, 2 KV grade anti-surge protection
Serial Port RS485 Isolated RS485
Baud Rate 300 ~ 115200 bps
Parity Bit None, odd parity, even parity, mark, space
Data Bit 5 ~ 9 bit
Flow Control No Flow Control
Protocol Ethernet, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS
Config Way Host computer configuration, WEB browser
Device management function library
TCP/IP direct communication, virtual serial port mode
Working Mode TCP server, TCP client (the TCP server also coexists)
UDP, UDP multicast
-40℃ ~ 85℃
Humidity Range 5% ~ 95% relative humidity
Dimensions L × W × H: 87 × 36 × 59 mm


Package Contents

  • 1x RS485 To RJ45 Ethernet Module

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