ASCOM Ascotel 2025 System Manual page 866

A
-
D
A
D
[1] Bell-ringing transformer as per EN 60742 (it may well be the same voltage source)
[2] The power supply for the interface and / or the power supply for a door intercom system or a system
panel (can be connected via the contact TS, TS')
Fig. 4.68: Block diagram with connection variant without amplifier
HBT_20321104_04/B0_en
Door intercom interface
+
Jumper
4D 150
2D
haz1154aaenb0
ascom
AC
AC'
[2]
U out
MIC+
V 8 =
MIC
Ω
SGND
Ta
+
LS
Ω
47
SGND
TS
[2]
TS'
Door opener
TO
TO'
Bell button
SON
SON'
Ascotel 2025/2045/2065
[1]
Example of
door intercom
for three-wire
connection
[1]
[1]
Cabling Interfaces 4.95