Installation Manual

Microdome Duo® Installation Manual
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INPUT Alarm Control and Detection
The input optocoupler supports two ways to connect external unsupervised alarms to Arecont Vision camera.
Only one of the following two schemes should be used at any given time.
OPTION-1: UNSUPERVISED ALARM DETECTION
In this scheme the IN+ & IN- terminals can be used for external signaling devices, such as door contacts or
motion detectors. Both normally open and normally closed devices are supported as shown below
IN+ IN- GNDOUT+ OUT-
IN+
IN-
Open /
Close
The diagram below illustrates the unsupervised alarm conditions:
IN+ IN- IN+ IN-
IN+
IN-
IN+
IN-
Normally Open Normally Closed
The following table shows how camera detects unsupervised alarms:
Input Unsupervised Alarms
Terminals
External
Status
Camera
Status
IN+ & IN-
OPEN
ON
CLOSE
OFF
Camera status can be read with the following command:
http://camera_ip/get?auxin
OPTION-2: INPUT VOLTAGE DETECTION