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Device overview
loudspeaker
Ring tone OFF
button with status
display (red LED is
on)
Light switch
button
Control key
microphone
LED indications
green LED is ON
• incoming door- and internal
• active voice communication
blinks 3 times
• busy voice channel, door relea-
red LED is ON
• ring tone OFF is activated
both LED are ON
• ring tone selection is activated
both LED flash
• error indication
continuously
The device is not ready for ope-
ration. Error has to be fixed by a
qualified electrician.
Operation
The bell rings
A ring tone signals an incoming call from front-
door, flat-door or an internal call.
The green LED is on.*
* does not light up on a floor call
Start a voice communication
Press the speech button shortly to accept calls.
The green LED is ON.
The green LED blinks 3 times,
if a voice communication already exists. Door re-
lease can still be realised.
3
flashing green LED
for ring tone and voice
callsaktive Sprechverbindung
se can still be realised
Terminate the voice communication
Press the speech button again shortly ( less than
1 second ) or the blue door release button ends
the communication. Automatic termination of
voice communication after at least 2 minutes.
Ring tone mute
red LED
Press the ring tone OFF button. An incoming
green LED
call will not be signalled acoustically.
Speech button
signals busy
The red LED is ON.
voice cannel by
To end ring tone mute press the ring tone OFF
button again.
Door release
button
The red LED is OFF.
Volume control
Door release
Press the blue colored door release button.
Light switching
Press the light switch button.
Additional call and switching functions can be
added to the indoor station. For more informati-
on refer to www.tcsag.de.
TIP
Should background noise affect the
communication, press the speech
button more than 1 second after
having accepted the call in order
to switch to the mode „half-duplex
communication".
In this mode the voice
communication is controlled by the
speech button:
to talk.
listen.
The ringing tone cannot be switched off
on the ISW3231.
Hold the speech button
Release the speech button to
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