ACTi B51 - Manual (Page 10)

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Hardware Manual
10
4) Digital Input / Output (DI/DO) and Audio Input / Output
This connector connects to digital input or output devices, such as an alarm trigger, panic
button, etc., as well as audio input and output devices, such as microphones and speakers.
Digital Input (DI) and Digital Output (DO) devices are used in applications like motion
detection, event triggering, alarm notifications, etc. See Prepare the DI/DO and Audio Input
/ Output Connector (Optional) on page 16 for more information.
5) DC 12V Power Input
In case the camera is connected to a non-PoE (Power over Ethernet) switch, use this
connector to connect the camera to an external power adapter (not included). See Prepare
the Power Adapter (Optional) on page 14 for more information.