7
"Loop-through" solution
The "loop-through" solution has the advantage of not requir-
ing the installation of a video distributor should video compo-
nents be retrofitted at a later time.
Outdoor station
Control unit audio
Door opener
WS 3
WS 2
WS 1
2
2
2
ET
2
ET
2
ET
2
2
2
ET = Floor-call button
WS = Home station
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