8 digital outputs

The expansion modules of the net-line FW-5 Product range allow a bespoke extension of the capacities of the telecontrol units. Depending on type and constellation, up to 12 expansion modules can be connected to one RTU. The connection is established comfortably and uncomplicated, by a T-Bus-connector, which carries out the communication as well as the power supply for most of the expansion units. By using the TBUS-T and TBUS-R accessories, the expansion modules can also be placed remotely from the basic system. The PWR-1 power supply module can be added for higher power requirements above the possibilities of the basic unit.

The 8DO expansion module allows the quick and uncomplicated addition of 8 digital outputs to the quantity structure of telecontrol devices within the FW-5 product family.

Technical Data


  • 8 relay outputs to 72 V DC, 150 V AC

Power supply

  • Internal via T-BUS, up to 6 modules
  • Approx. 200 mA per module base load ~40 mA + 20 mA / relay
  • Approx. 60 mA @ 24 V DC supply


  • Plastic with integrated I/O, top-hat rail installation
  • 22.5 x 105 x 115 mm (W x H x D)