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Bard S8612-066 - Main I-O Board

Bard S8612-066 is an OEM Main I-O Board used in Bard MC5000 series controllers, including MC5*00 models such as the MC5300, where it manages the controller input and output connections that coordinate calls for heating, cooling, ventilation, and system alarms. When a wall-mounted Bard system has control issues like missing outputs, erratic inputs, or communication problems traced back to the controller hardware, replacing the Main I-O board with the correct Bard factory part helps restore reliable operation and proper signal handling. Confirm your controller model and board part number before ordering, since MC5000 series controllers also use separate display, secondary I-O, and alarm boards that are not interchangeable with this board.


  • Technical Specifications
  • Product number: S8612-066
  • Manufacturer description: 8612-066 Service Part
  • Weight: 10.000 lbs
  • HTS Code: "8537.10.9160"

  • Previous Versions
  • 8612-066 (Obsolete, superseded by S8612-066)

$384.00