TCP/IP converter

The Serial Device Server allows the connection of our level converters and dataloggers with RS232C interface to the 10/100 BaseT Ethernet in the easiest way. This allows you to access the M-Bus meters from several PCs on the network. When using our M-Bus dataloggers, it is also possible to read the consumption data via the Internet. An included Windows driver emulates a virtual, serial port on the PC and transfers the data over the network. This allows you to keep on using your serial PC software for communication.


  • Connects serial devices to the Ethernet

  • Converts 10/100 BaseT to RS232

  • Network protocols: TCP/IP, UDP/IP,...

  • RS232: independent of protocol / transparent

  • For M-Bus Level Converters and Centrals

  • Windows driver for virtual COM-Port

  • Go on using your RS232-software

  • Configuration with software or webbrowser

Technical Data

Ethernet connector

10BaseT (RJ45)

Serial connector

RS232C, DB9 plug
1 channel: RX, TX, RTS, CTS, GND
3 channels: Rx1, TX1, RX2, TX2, RX3, TX3

LED displays

2 LED ́s for operating status
1 LED ́s for Ethernetlink

Power Supply

9 .. 18 VDC, 150mA at 12V

Operating temperature

-5 .. 55 °C

Operating humidity

10-90%, ot condensing


B x L x H = 48 x 90 x 25 mm


Wall or DIN rail


55 g


Order Information

Order Number



Serial Device Server with driver software Plug-In power supply, Patch cable and RS232C cable for M-Bus


WiFi version of the Serial Device Server


Adapter DSub - screwterminals for 3 channel use

Copyright© 2018  Relay GmbH

Designed By T.McDowell