SIEMENS 6AV3505-1FB12 Description Description SIEMENS OP 5/A2 OPERATOR PANEL 4 LINE DISPLAY, 20 CPL 1 X TTY/V.24 AND 1 X RS422/485/ MPI/PPI/SINEC L2-DP Related products SIEMENS 1FK6042-6AF71-1TB0 SIEMENS 1790L811A SIEMENS 1FK6032-6AK71-1TA0 SIEMENS 1FK7063-5AF71-1FG2 SIEMENS 1FK6060-6AF71-1TA0 SIEMENS 1FN1910-0AA20-3AA0