Anderson E321748 Chart Recorder Circuit Board

The Anderson E321748 Chart Recorder Circuit Board is a replacement input printed-circuit board for Anderson chart-recording systems. Identified as Recorder/Controller Input Rev C, with manufacturer part number E321748 and SH-M suffix, this board is designed to plug into compatible Anderson recorder/controller assemblies to provide the input signal interface for the recording and control functions. The board uses 94V-0 rated material and is listed as discontinued, so new stock is typically limited to surplus or used units. As part of Anderson's legacy line of chart-recording equipment, the E321748 is encountered in service and repair contexts where technicians replace individual input boards rather than entire assemblies. Buyers should verify compatibility with their specific chassis and revision level before purchase, since Rev C denotes a particular generation of the input board. When sourced, the part is commonly found through surplus channels or used-stock listings under the Anderson E321748 designation.