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Wireless Data Transmission

The Arrowvale Wireless Serial Adapter (WSA) range of products provide an effective rail approved solution for data acquisition & transmission from isolated or normally inaccessible vehicle equipment. Through a series of 868MHz transceivers, a wireless relay or mesh can be formed enabling data to be transmitted back to a central unit for local or remote collection. The WSA products complement the Arrowvale range of data recorders, remote condition monitoring hardware and the Diagnostyx web based analysis and reporting tool. 





Typical applications for data acquisition:

  • OTMR, TMS, HVAC controller, toilet controller, door controller, engine sensors, battery charger, auxiliary power converter, brake controllers etc. via communications ports
  • 3rd party equipment LED light activity when used in conjunction with the Arrowvale LED1000
  • Digital battery referenced train wires, signals and relay contacts
  • A range of volt free contacts, limit/ proximity/ hall effect switches
  • Analogue probes & sensors – speed, temperature, pressure etc.
  • Frequency or counter signals - engine revs, door operations, timings

The WSA can also be used as a data network extender:

  • Outlying data gathering hub
  • Serial port extender incorporating standards conversion
  • Serial to Ethernet extender/ converter
  • Low speed Ethernet jumper between vehicles

Main features:

  • Modular with a variety of optional at-build hardware configuration options
  • User configurable for site specific features
  • High penetration wireless technology. Suitable for cab back-walls, seats or body underframes (subject to survey)
  • Rugged and reliable, built to Rail standards including RIA12 transients

Current Range

  • WSA500: Compact unit designed for use where clean power is available such as an interface to a Data Recorder
  • WSA750: A customisable unit offering a universal and configurable solution
  • WSA1000: The standard unit offering RIA12 protection to meet the requirements of EN 50155

Key System Features

Core Arm processor, low power, no operating System overheads
Serial interface Multi-protocol RS232/485 full/half duplex
Wireless interface
  • 868MHz Personal Area Network with external antenna connection
  • Can use direct connected 'rubber duck' or cabled antenna
Case Rugged aluminium fabrication flange mounted
Memory Internal non‐volatile storage for software use
Configuration User configuration file stored in non‐volatile coding plug
Engineering Full Engineering port for configuration / status/ diagnostics
Standards BS EN 50155:2007, EN50122, RIA12 power (WSA1000)

IP20 as standard. Alternative ratings would be available upon request


Overall size 108w x 112d x 40h to extremities incl. flanges and fixings
Power Local clean supply 5V to 24V


Overall size Custom subject to configuration, IP requirements etc..
  • RIA12 approved 24V / 110V, others on request
  • Optional IEEE 802.3af Power over Ethernet (select at build)
Channel options Additional cards can be provided with: digital / analogue / frequency /
comms etc..


Overall size 174w x 142d x 43h to extremities incl. flanges
  • RIA12 approved 24V / 110V, others on request
  • Optional IEEE 802.3af Power over Ethernet (select at build)
Interfaces Single 10/100 Ethernet, M12 connector, optional PoE

Further Information


Click pdf icon to download the WSA brochure

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