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6. Operating Controls
a) Indoor Unit
1
Handheld unit speaker
2
Handheld unit microphone
3
Switch for answering / hanging up
4
LED “IN USE”
5
Bell signal speaker
6
Button “A” (e.g. for stairs light, etc.), connected directly to the terminal bar on the back
7
Button “B” (e.g. for door opener), switches the outdoor unit’s relay
8
Terminal strip
9
Apertures for wall-mounting
10 Slider for ringing volume
1
5
2
3
4
6
7
8
9
10