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Bard part number 8301-109-001ABX is a programmed UPC3 C2 control module supplied boxed, used as the factory logic and staging controller on certain Bard wall-mount variable speed systems. As an OEM Bard control, it is intended to restore proper unit operation and communication by providing the correct preloaded configuration required for the specific application, which helps avoid setup issues that can occur with non-programmed substitutes. Because UPC3 C2 variants are application-specific, confirm your unit model and existing control part number before ordering so the replacement matches your equipment and plug connections.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.