Simplex 650-440 — a Simplex service part number that no Simplex publication read for this page names, so the assembly should be confirmed against the panel service parts list.
Simplex uses 650- numbers throughout its service parts lists, and the prefix says nothing about what a part is: in the 4017ES list 650-2702 is a frame assembly with electronics and 650-1192 a wire entry cover, board assemblies carry 566- numbers, and in the 4100ES list 650-450 is a box hinge.
- An 8 prefix on a replacement service part number indicates a repaired assembly or PC board, so 8650-440 is the repaired form of it
- Service parts lists tabulate each part against its board assembly, installation instruction and harness
- Those lists do not share a column order, so read the row from the right one
- No listing, current, dimension or panel fit for 650-440 appears in any Simplex document read
Every catalogue entry naming a control unit for this number traces to distributors rather than to Simplex, so nothing is asserted here about which panel it fits. Confirm it against the panel service parts list before ordering.
