Build shielded RS-485 serial links for industrial controls, automation equipment, instrumentation, and distributed data devices. The cable uses one 22 AWG pair of tinned-copper conductors, providing a dedicated balanced path for RS-485 communications rather than combining signal circuits in a larger multi-pair construction. Its overall shield helps limit exposure to electrical interference in equipment areas, control panels, and cable routes near powered devices. Datalene insulation surrounds the conductors and a PVC outer jacket provides the finished cable covering. The combination of a shielded pair, tinned-copper conductors, Datalene insulation, and PVC jacket makes this construction appropriate where the cable type and material stack need to be matched to an existing RS-485 installation. The PLTC designation supports use in power-limited tray cable applications where that rating is required. BEL3105A is differentiated by its 22 AWG, single-pair configuration. It is intended for one RS-485 circuit per cable run, avoiding unused pairs and excess cable diameter associated with higher-pair-count control cable. Specify conductor count, shielding, jacket material, and PLTC requirement when matching it to terminal blocks, conduit fill, routing practices, and the installed communications equipment.