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Network Camera User’s Guide
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Appendix B: Alarm I/O Connector
Interfacing to the External I/O
Some features of the Camera can be activated by an external sensor that senses
physical changes in the area device is monitoring. These changes can include intrusion
detection or certain physical change in the monitored area. For examples, the external
sensor can be a door switch or an infrared motion detector. These devices are customer
provided, and are available from dealers who carry surveillance and security products.
Electrically, they must be able to provide a momentary contact closure.
This device provides a general I/O terminal block with one digital input and one output
for device control. Pin 2 and 3 can be connected to an external sensor. The input voltage
will be monitored from the initial state ‘LOW’. If the external sensor need 12VDC power,
then it can connect to Pin1(50mA maximum). The Alarm Output of pin 3 and 4 can be
used to turn on or off the external device.
Pin Function
1 12VDC power supply (50mA maximum)
2 Alarm Input
3 GND
4 Alarm Output
DI/DO
Connector