Add-on black button for PT-522W. 2-wire bus, audio and 6-wire bus video digital entry system
| Make | Farfisa |
|---|---|
| Manufacturer | ACI Farfisa |
| Model code | PT-515 |
| Series | DF6000 Series |
| Additional info | Add-on black button for PT-522W. 2-wire bus, audio and 6-wire bus video digital entry system |