Avtron A9109 A9I09 C10851 DK Thumbwheel Switch

Avtron A9109 Setpoint Assembly, identified by the part numbers A9109, A9I09, and C10851, incorporates a Rev B thumbwheel switch and is listed as a DK Thumbwheel Switch in Avtron’s legacy hardware line. As a setpoint input module, it provides a manual numeric input for Avtron control systems, translating wheel positions into a target value used by compatible controllers and drives, typically in process control, test routines, or monitoring applications where precise local adjustment is required. The Rev B designation signals the revision level of the thumbwheel switch, while C10851 is indicated as the controller platform in some catalogs, situating this part within the older Avtron sub-assembly family and suggesting cross-compatibility with related Avtron equipment. Because listings sometimes describe the part as new or spare and carry the exact identifiers, verify compatibility with your specific equipment’s model and mounting requirements before ordering, and ensure the panel cutout and orientation accommodate the DK thumbwheel switch.