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The Bard 910-1979BX is an OEM temperature sensor assembly used to provide outdoor air temperature input for Bard wall mount HVAC economizer applications where a temperature-only sensor is required. Accurate outdoor temperature feedback helps the economizer make correct ventilation and free-cooling decisions and supports stable unit operation. This sensor assembly is designed to match Bard wiring and mounting provisions for straightforward replacement during service, especially when troubleshooting erratic economizer operation or temperature reading faults. Verify compatibility by matching your unit model and economizer configuration, since Bard also uses alternate outdoor sensing options such as enthalpy sensors depending on the ventilation package.
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.