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| Referenzen | Direktruftaste | Türöffner-taste | Telefonbuch | Tastwahlblock | Kamera | Unterputz-montage (x=E) | Aufputz-montage (x=S) | Anrufsäule |
| PTC 550 20x | | | 1 | 1 | | DOWNLOAD | DOWNLOAD | |
| PTC 550 21x | | | 1 | 1 | 1 | | DOWNLOAD | |
| PTC 551 00x | 1 | | | | | | | |
| PTC 551 01x | 1 | | | | 1 | | | |
| PTC 551 20x | 1 | | | 1 | | | | |
| PTC 551 21x | 1 | | | 1 | 1 | | | |
| PTC 552 00x | 2 | | | | | | | |
| PTC 552 01x | 2 | | | | 1 | | | |
| PTC 552 20x | 2 | | | 1 | | | | |
| PTC 552 21x | 2 | | | 1 | 1 | | | |
| PTC 552 10x | 1 | 1 | | | | | | |
| PTC 552 11x | 1 | 1 | | | 1 | | | |
| PTC 552 30x | 1 | 1 | | 1 | | | | |
| PTC 552 31x | 1 | 1 | | 1 | 1 | | | |
| PTC 553 00x | 3 | | | | | | | |
| PTC 553 01x | 3 | | | | 1 | | | |
| PTC 553 20x | 3 | | | 1 | | | | |
| PTC 553 21x | 3 | | | 1 | 1 | | | |
| PTC 553 10x | 2 | 1 | | | | | DOWNLOAD | |
| PTC 553 11x | 2 | 1 | | | 1 | DOWNLOAD | | |
| PTC 553 30x | 2 | 1 | | 1 | | | DOWNLOAD | |
| PTC 553 31x | 2 | 1 | | 1 | 1 | DOWNLOAD | | |
