Universal electronics 20-0006 / 20-0018
Earthing
Telephone line
Main analogue connection or
analogue telephone extension
Wire a
Wire b
Additional power supply
potential-free voltage, e.g. from a
Behnke power supply unit
–
12 V - 15 V=
+
Relay 1
Relay switch power: max. 60 VA24 W:
0.5 A, 120 V~ or 1A, 24V=
Rest contact
Control contact
Operating contact
Relay 2
Relay switch power: max. 60 VA
24 W, 0.5 A, 120 V~ or 1A, 24V=
Operating contact
Control contact
Rest contact
Alarm input
Potential-free voltage, e.g. from a
Behnke power supply unit
–
6 - 24 V =
+
Button 2 (potential-free closing contact)
Microphone(Check for the correct polarity)
Speaker
Number keypad
Connection for additional boards
EEprom
Master processing unit
Internal configurations keypad
MLM A (Main MLM) – microphone-
speaker module (Configurations
step 22 / button 2)
Please note: When connecting multiple MLMs, the maximum distance between the basic electronics and the MLMs ends up being
shorter: 1 MLM = 25 m / 2MLMs = 12.5 m each / 3 MLMs = 8.5 m each
Suitable installation material to adapt speaker, microphone and buttons at the door: Tapping box 20-9208 or patch cable 20-9308
as an alternative
www.behnke-online.com
Manual Door intercom devices a / b Series 20 / 30 / 50
Please note: Additional configurations step
can be found starting on page 52.
MLM B (Additional MLM) – microphone-
speaker module (Configurations
step 23 / button 3)
MLM C (Additional MLM) – microphone-
speaker module (Configurations
step 24 / button 4)
Configuration of telephone numbers
Yellow: Configurations step 22
Blue: Configurations step 23
Red: Configurations step 24
GB
Connection
50