Robertshaw 554-B2-B2 Alarm Relay

Robertshaw 554-B2-B2 Alarm Relay is a compact electro-mechanical device from the Robertshaw brand that serves as a signaling interface in control and monitoring systems, enabling a monitored condition to trigger an alarm circuit in equipment ranging from HVAC controls to safety interlocks. As an alarm relay, it accepts a control input from a sensing element and reliably switches the alarm circuit, providing isolation between the sensing circuitry and the alert output to protect delicate control electronics. The 554-B2-B2 designation places it within Robertshaw's alarm-relay product family, a lineage that covers a variety of relay packages used to interlock, signal, or override in integrated safety and monitoring schemes. Exact specifications—such as contact configuration, coil voltage, current rating, and mounting footprint—are published by Robertshaw in the official replacement-part catalogs and supplier datasheets; for proper selection and installation, consult those resources or an authorized distributor to verify compatibility with your equipment and obtain the precise electrical and mechanical details for the 554-B2-B2.