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I/O Extension Modules

  • I/O Extension modules with MODBUS-RTU
  • Compatable with EC series gateways
  • 12-24V DC

Product description

The Netbiter® I/O Extender series is a collection of analog and discrete I/O modules with Modbus-RTU protocol communication. These modules are ideal for a wide variety of distributed I/O applications including data acquisition and control, process monitoring as well as test and measurement.


Designed for industrial applications, the DIN rail mountable Netbiter I/O extenders can be connected in parallel with other Modbus equipment in a multi-drop installation topology.


When using the Netbiter I/O extenders together with the Netbiter EasyConnect and WS series gateways, it is possible to monitor/control the I/O signals over Ethernet LAN’s, Internet or GSM/GPRS networks. This makes a powerful solution for remote monitoring and control, alarm management and data logging of I/O’s.


  • Modbus RTU Slave with RS-485 communication
  • Fully compatible with Netbiter EasyConnect and WS series for communication over Ethernet, GSM and GPRS
  • Screw terminals for wiring
  • LED Indicators
  • DIP switch for Modbus address setting
  • DIP switch to set module to known communication parameters
  • DIN rail mounting


Part numbers

Parts Price Supply voltage Digital inputs Digital outputs Relay output Analogue inputs Analogue outputs
12-24 V DC 8 8
12-24 V DC 4 2 2 x 0-10V / 0(4)-20mA 1 x 0-10V / 0(4)-20mA
24 V DC 4
12-24 V DC
12-24 V DC 8 x 0-10 V DC
12-24 V DC 8 x 0(4)-20 mA


I/O Extender, 8 Dig. Inputs, 8 Dig. Outputs, 8 Counters

Technical data

Technical Data

Supply voltage 12-24 V DC
Height 109 mm
Width 23 mm
Depth 98 mm
Temperature operational max 50 °C
Temperature operational min -10 °C
Digital inputs 8
Digital outputs 8
Approvals CE
Protocol RS-485 Modbus RTU


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