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The MARS Series 390 change-over switches are used for summer-winter change-over of electric thermo-stats in hydronic heating - cooling fan-coil units.

  • Color coded leads allow easy installation
  • SL-8 thermostat is enclosed in sealed case for trouble-free operation
  • Snap-acting disc type, insures accurate temperature repeatability
  • Can be mounted in any position
  • UL and CSA listings available
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Manuals (1)
Pipe Size:
Lead Wire Length:
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