Digital Input RTU Module

  • 24 optically isolated digital inputs
  • Sample rate 1ms
  • Time stamped values
  • Time synchronization by communication protocol and by Telem-GPS interface
  • Internal or external 24 or 48 V DC signal power
  • Optional external 110 V DC signal power

Common features of Telem I/O modules:

  • Disconnection terminals with test sockets
  • Terminal wires up to 2,5 mm
  • RS-232 and RS-422 interfaces
  • Communication protocol IEC 60870-5-101 Unbalanced
  • Daisy-chain connection for up to 15 modules




Data concentrator for data collection from substation level peripheral devices and for communication protocol adaptation to control centre.


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