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EPHD04+ HDcctv DVR
14
2.3.3 Alarm I/O
The DVR provides four alarm inputs and two alarm outputs. Please refer to the table below
for PIN assignment.
Alarm In Alarm Out
Figure 2-12
Alarm Input
No. Description No. Description
1 ALM_IN1 2 ALM_IN2
3 ALM_IN3 4 ALM_IN4
G GND
Alarm Input Contacts
This DVR provides one alarm input per camera. All inputs are programmable N.O. (Normal
Open) or N.C. (Normal Closed). All settings are programmed in the ALARM / Event menu.
ALMIN
GND
ALMIN
GND
Alarm Input with N.O. contact in idle state Alarm Input with N.C. contact in idle state
Alarm Output Contacts
The relay output provides either Normally Open or Normally Closed dry contacts.
ALMOUT +
ALMOUT -
ALMOUT +
ALMOUT -