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The Bard 8620-212 Refrigerant Alarm Relay Kit is an OEM control accessory used to bring a refrigerant pressure lockout alarm signal out of compatible Bard wall-mount and packaged HVAC equipment for monitoring by a building alarm point or supervisory controller. On units equipped with the J control module, the refrigerant pressure alarm relay is associated with high or low refrigerant pressure lockout conditions, helping maintenance teams respond faster to loss of cooling events and reduce downtime. This kit is intended for service replacement or retrofit where a reliable relay-based alarm interface is required, and it should be installed and wired according to the specific Bard unit and controller documentation to ensure the correct alarm terminals and dry-contact strategy are maintained.