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Honeywell's January 2026 System HINTS identifies exact part 51402455-100 under DNCF - Multiple and describes it as a 2 NODE CFA. The same manufacturer notice places the coax platform in Phased Out support from December 31, 2025. It does not list 51401477-100 or establish that the two numbers in this website title belong to one assembly, so that relationship requires exact label and order-record confirmation.
Honeywell's January 2026 System HINTS includes 51402455-100 in its table of coax LCN and UCN items being phased out. The exact row assigns the node type DNCF - Multiple and the part description 2 NODE CFA. Honeywell explains that its coax platform includes LCN and UCN products, the xPM family and FSC controllers, and that all listed coax products transitioned to Phased Out support starting December 31, 2025. The notice also defines that state as no new parts or components, commercially reasonable support effort and available modernization services.
The website title combines 51401477-100 with 51402455-100, but only the latter appears in the reviewed Honeywell notice. The evidence does not show that both markings belong to one physical unit, establish the first number as a backpanel, or define compatibility between them. Before supply, inspect every label on the allocated hardware, record the installed node, card-file configuration, power arrangement and connectors, and obtain a traceable Honeywell bill of material or order record connecting both numbers. Dimensions, weight, slot capacity, voltage, revision equivalence and interchangeability from reseller listings are intentionally excluded.
Honeywell's exact table identifies 51402455-100 under DNCF - Multiple and describes it as 2 NODE CFA. This establishes the part number, node family and short OEM description only. It does not establish dimensions, mass, connector population, included boards, electrical ratings or a relationship to the other number in the website title.
The reviewed Honeywell source does not list 51401477-100. Preserve that number for receiving inspection, but do not describe it as a backpanel, board, chassis component or alternate number without a legible physical label and a traceable Honeywell parts list that explicitly connects it to 51402455-100.
Honeywell states that the listed coax platform products transitioned to Phased Out support starting December 31, 2025. The notice describes limited commercially reasonable support and modernization services, so any replacement plan must verify current availability, installed-node compatibility, condition and migration implications through a written quotation and the site's approved engineering process.
Verify both 51401477-100 and 51402455-100 on the allocated hardware and obtain a traceable Honeywell bill of material or order record connecting them. Record the installed DNCF node, card-file position, populated boards, power hardware, fan assembly, connectors, cable tags, revisions and cabinet drawings. Treat the two website numbers as unresolved until the manufacturer record and physical markings agree; do not substitute reseller descriptions for that evidence.
Follow the site's isolation, electrostatic-discharge, backup and change-control procedures before disturbing any legacy coax hardware. Preserve cable identification, slot population and node configuration. After installing only the fully verified assembly, confirm power, cooling, LCN or UCN communication, node recognition, diagnostics and every affected operator or control function. Because Honeywell places the listed coax items in Phased Out support, align the spare decision with the site's approved modernization and risk plan.