"CONSISTS OF FRAME HOLDING PRINTED WIRING BOARD WITH ONE CONNECTOR,ELECTRICAL,RECEPTACLE; TWO CAPACITORS,FIXED,ELECTROLYTIC; ONE CAPACITOR,FIXED,CERAMIC DIELECTRIC; TWO MICROCIRCUITS,DIGITAL; TWO KEYING PINS,ONE WITH 90 DEG CUTOUT ON LOWER RIGHT OF PIN,ONE WITH D-SHAPED FLAT TIPPED 45 DEGS LEFT; PROGRAMMED BY TRUTH TABLE 77A102038"