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The Bard 8201-065 time delay relay is an OEM 24V control component that provides a timed, SPST normally open switching function used in Bard wall mounted package heat pump circuits, commonly as a low pressure bypass delay to help prevent nuisance trips during compressor start and transition conditions. Installing the correct Bard relay helps restore proper equipment sequencing and reliable operation, but you should always match the part number and confirm application by model and wiring diagram before ordering to ensure the coil voltage and contact function align with your unit.