| Wiring distance: |
 |
Entrance station - Expanded Bus & Expanded Video control unit 300m |
| |
Expanded Video control unit - Farthest Video Apartment station 150m |
| |
(Expandable with additional Video control unit) |
| |
Expanded Bus control unit - Farthest Audio Apartment station 300m |
| |
Accumulated total Audio wiring distance 2,500m/SUB line |
