01 - SEE STANDARD VERSION Model designation: 123 - 003/007/020/023/026/028/030/033/043/050/053/083/086/093/102/103/105/120/123/125/126/130/132/183/190/193/200/220/223/243/280/283
02 - USED ON TAXI WITH REAR END MOUNTED LOUDSPEAKER In connection with SA: 56178 Model designation: 123 - 020/023/026/028/120/123/125/126/130/132/133/220/223