Backup Flight Controller Substitute Unit from the JSC Avionics Engineering Laboratory (JAEL), measuring 5 x 15 x 7.25, marked on the end as "P/N SED36136375-301, S/N 1003." One end had connectors marked "J1," "J2," "J3," and "J4," and fuses marked "F1" and "F2." In very good to fine condition.
Provenance: The Spaceflight America Museum and Science Center in Prince Frederick, MD.
