RA 900
RA 900 Remote Annunciators can be utilitzed within a facility to remotely monitor and control Thomson Power Systems TS 870 & TS 880 Series of Automatic Transfer Switches.

The RA 900 can be used to remotely monitor and control up to 8 Automatic Transfer Switches concurrently which are located at a single site using an Ethernet LAN network.

Stock Models

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Remote Monitoring Features:

  • ATS Power Mimic Bus
  • ATS Position (Load on Utility/Load on Generator)
  • Source Available Status
  • ATS Operating Mode (Auto, Off, Manual, Test)
  • Source & Load AC Voltage & Frequency Analog Data
  • Alarm/Fault Status
  • Active Alarms/Alarms History
  • ATS Configuration/Firmware Info
  • Site View (All Connected ATS)
  • ATS Timer Countdowns

Remote Control Features:

  • Alarm Reset
  • ATS Mode (Auto, Off, Manual, On Load Test, Off Load Test)
  • Timer Bypass
  • Remote Utility Power Failure Simulation Test


7" Color Touch-Screen Display

17" Color Touch-Screen Display

Surface Mount Enclosure Option available.



Engineering Briefs


Schematic Drawings

Physical Drawings

Ordering Information

RA900-7 - 7" Color Touch Screen Display

RA900-17 - 17" Color Touch Screen Display