D-Link DCS-1000 - Manual (Page 70)

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I/O Connector
I/O Connector Definition for DCS-1000
An 8-pole connector is provided for auxiliary IO connections to the DCS-1000.
The IO connector provides the physical interface for 2 digital output and 2
digital input that is used for connecting a diversity of external alarm devices to
the DCS-1000 such as IR-Sensor and alarm relay.
The digital input is used for connecting external alarm devices and once
triggered images will be taken and e-mailed.
The supported transistor output can give a maximum of DC 5V to the
externally connected alarm devices and once triggered the current will activate
the devices.
In 11
In 12 In 11 & In 12 is a pair for digital input. It works at voltage 5V
In 21
In 22 In 21 & In 22 is a pair for digital input. It works at voltage 5V
Out 1 +
Out 1 - Out 1 - & Out 1 + is a pair for digital out. The out put voltage is 5
V and maximum current is 100 mA
Out 2 +
Out 2 - Out 2 - & Out 2 + is a pair for digital out. The out put voltage is 5
V and maximum current is 100 mA