Allen-Bradley PN-43537 Communication Interface Module

Allen-Bradley PN-43537 Communication Interface Module is a standalone AB communication interface board, commonly listed as AB PN-43537 communication board and identified by the BIN-1.5.5 designation. This part appears in secondary-market listings as a single-item unit (1PC) and is marketed under the AB brand, reflecting its role as a field-installable module within Rockwell Automation–style control architectures. The designation "communication interface module" indicates its purpose as a bridge between a controller and other devices or networks in compatible AB systems. In practice, modules of this type are used to extend or enable communications for legacy AB controllers, and the PN-43537 label provides a precise model identifier for ordering, replacement, or refurbishment in maintenance contexts. Potential buyers commonly encounter this part in refurbished or used equipment inventories and standalone component catalogs, where it is listed alongside other AB interface modules and related BIN-coding for inventory tracking. Given its AB branding, the PN-43537 module would be sought by technicians working on older AB PLC configurations where a dedicated interface board is required to facilitate data exchange or interfacing with peripheral devices within the same control platform.