PC Board Module Part No :- 51108089-100 Assy No :- 51108088-100 This paddle board provides the physical link between the Honeywell Data Hiway used with the TDC 2000 and the Local Control Network (LCN) used with the TDC 3000.Hiways A and B connect to the BNC connectors of his paddle board, using Hiway Tees.