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The Bard 910-1980BX Sensor Assembly - Enth-Boxed is an OEM enthalpy sensor assembly used with Bard economizer capable wall mount HVAC systems to monitor outdoor air conditions for smarter ventilation and free cooling decisions. This sensor helps the control system determine when outside air is suitable for economizer operation by evaluating heat content of the air, improving comfort control while reducing unnecessary compressor run time. As a genuine Bard replacement part, 910-1980BX is built for proper plug in fit and reliable signal accuracy when replacing a failed or drifting sensor, and it is best practice to confirm compatibility by matching the exact part number to the unit model and service literature before ordering.
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.