Appendix A: Alarm I/O Connector
Some features of the Internet Camera can be activated by the external sensor that senses
physical changes in the area Internet Camera 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. The pin 1 is located at the right side of terminal block from rear view. 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.
This Internet Camera provides a general I/O terminal block as below:
Pin
Function
1
12VDC power supply (50mA maximum)
2 Alarm
Input
3 GND
4 Alarm
Output
User can refer to the schematic below to make a proper connection between I/O connector and
external sensor and output device.
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