3G or 4G GPRS modem, router and RTU module with 1 or 4 Ethernet ports. Includes direct (non configurable) communication protocol translation from IEC 60870-5-101 to IEC 60870-5-104. Also used as standalone NTP server.

Basic card

  • Ethernet connection
  • 2 RS-232 ports
  • 2 RS-232/485 ports
  • USB port for configuration
  • Temperature sensor port
  • 3G/GPRS modem

Different expansion cards

Communication protocols towards to control centre
IEC 60870-5-101 Unbalanced & Balanced, IEC 60870-5-104

Communication protocols towards to substation
IEC 60870-5-101 Unbalanced, transparent connection


Configuration tool Telem-GWS for data concentrators
User Manual

Cyber security notifications:

AS Martem Laki 25, 12915 Tallinn, Estonia
Phone: (+372) 639 7979 E-mail: martem [at] martem dot eu