153
OPTIONAL CONNECTIONS
oor bell push button connection.
D
A
+ _
D
SAR-12/24
P
N
220 Vac/
1.8A max.
IN
IN
NC
NA
C
( )
*
The neutral supply from the stairs light will be wired through the relay contacts SAR-12/24, the maximum current for stairs
light will be 1.8A.
( )
*
uxiliary devices activation with T-740 Plus telephone.
A
To activate auxiliary devices the use of a SAR-12/24 relay unit will be required. If this device is
shared for all the T-740 Plus telephones, link their PA terminal and use just one relay unit. In
case that each telephone has its own application use a SAR-12/24 relay unit for each
telephone and don't link the PA telephone terminals.
To activate this function, press
telephone push button at any moment with no dependence of
the handset position.
Usual applications are the activation of stairs light, second lock release, ...
First t
T-740 Plus telephone must be configured with SW1 dip switch in "PA" output mode
function (see page 133).
he
T-740 Plus
HZ-
-
HZ
-
T-940 Plus
Platea Plus /
Tekna Plus
T-740 Plus
PA
To distributor/
door panel.
To stairs light
push button
The Platea Plus / Tekna Plus monitor and the T-740 Plus and T-940 Plus telephones can be used to
receive the calls made from the apartment door, saving the use of a bell. Wire the push button of
the apartment door to the 'HZ ' and ' ' monitor or telephone terminals.
The reproduced acoustic tones are different depending on their provenance, that allows the user
to distinguish where the call is made from. If during a conversation a call is made from the
apartment door, acoustic tones will be reproduced on the handset to advise that someone is
calling.
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