6AV66410BA110AX1 6AV6641-0BA11-0AX1 Siemens

SIMATIC Operator Panel OP 77A LC display backlit, 4.5" display graphics-capable, MPI-/PROFIBUS-DP interface to 1.5 MB, configurable from WinCC flexible 2004 Compact HSP contains open source software, which is provided free of charge. see enclosed CD