2N Lift emergency phone 2N LiftNet - Manual, 1446 v1.8.3 - Manual (Page 42)

Lift Cabin Audio Unit
– Compact
2.3
42
ALARM Button Connection with N/C Contact
Note
 The ALARM button mounted on the cover is still functional when an
external button is connected.
Voltage Activation
Caution
 5 - 24 dc voltage of any polarity can be used. Make sure that the power
supply is backed up properly.
 Where activation from multiple places is necessary, voltage control can be
combined with buttons.
 A buzzer or horn can be connected in parallel, see the figure to the right.
Figure 2.15 ALARM
Button Connection with
N/C Contact
Figure 2.16 Voltage Activation