Rack-mountable Discrete Output Control panel from Kennedy Space Center, measuring 19″ x 10.5″x 4″, labeled at the bottom, "Discrete Output Control," with four rows of 23 numbered indicators, 46 small switches, and nine control buttons along the bottom. The banks of buttons are identified as "Address Word: Reply / Command," "Data Word: Reply / Command," "Power," and "Controls." A NASA property sticker is affixed to lower left corner of the panel, and the intricate wiring remains intact on the reverse. In fine condition, with one button cover missing and overall wear.