Dahua DHI-ASC1204B - Wiring Description of External Alarm Input; Wiring Description of Alarm Output

Installation Guide 9
Table 2-6
Reader Type
Connection Mode
Length
485 Reader CAT5e network cable, 485 connection 100m
Wiegand Reader CAT5e network cable, Wiegand connection 100m
2.4.5 Wiring Description of External Alarm Input
External alarm input connection is shown in Figure 2-10. Please refer to Table 2-7 for
descriptions of wiring terminals.
Figure 2-10
Table 2-7
Port
Wiring Terminal
Description
External alarm
input
ALM-IN External alarm input ports
are able to connect
smoke detector and IR detector etc..
When external alarm is triggered, all doors are
linked to be normally open.
GND
2.4.6 Wiring Description of Alarm Output
With 1-ch alarm output, after internal alarm input (such as door timeout) or external alarm input
triggers an alarm, the alarm output device gives an alarm for 15s.
There are two connection modes of alarm output, depending on alarm device. For example,
IPC can use Mode 1, whereas audible and visual siren can use Mode 2, as shown in Figure
2-11 and Figure 2-12. Please refer to Table 2-8 for descriptions about wiring terminals.
Figure 2-11