905U-1,2,3,4 Wireless IO

The ELPRO 905U Wireless Multi-I/O is a node that extends communications to sensors and actuators in local, remote, or difficult to reach locations. Designed with a long range, license-free or licensed wireless transceiver, the ELPRO 905U module provides a simple to deploy solution to transfer process I/O signals reliably over long distances or within an industrial plant. Capable of transferring analog or discrete I/O points, in point to point or point to multi-point situations. Each 905U product can also provide repeater functionality to extend the distance of the network, and capture remote I/O points. I/O is scalable using 115S serial expansion units at each 905U unit.



  • High‑level alarms
  • Flow meter monitoring
  • Storage tank monitoring
  • Pipeline cathodic protection
  • Pump stop-start
  • Weather station reporting
  • Bearing condition monitoring


  • Process plants
  • Factories, Warehouses
  • Agriculture
  • Mining
  • Irrigation
  • Security
  • Overhead cranes
  • Manufacturing plants
  • Marine and ports
  • Water and sewerage
  • Tank farms
  • Building management
  • Lighting control
  • PLC interconnection
  • Mobile vehicles
  • Rotating machinery


  • 865–867 MHz/902–928 MHz frequency and 1W RF power
  • Link I/O inputs to single or multiple I/O outputs (peer to peer)
  • Reliable point–to–multi-point two-way communications combining exception reporting, self-checking and data encryption
  • Multi-hop repeater function provides increased communication distance
  • Multiple I/O channels for monitoring and controlling field devices with set-point, pulse count, and rate available. Additional internal I/O points provided for health monitoring
  • Communication failure notification and diagnostics, including radio path measurement, communications logging, and verification of I/O values
  • Built-in low voltage AC/DC/battery power options, UPS battery charger and solar regulator
  • User-friendly configuration software
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