AXIS 2120 User’s Manual

The Unit Connectors

65

Digital Input

Used for connecting external alarm devices and triggering images for specific alarm-based events, the digital input is typically connected to a motion detector (or any other external security device) for taking images on each occasion that the detector is activated.

Digital Output

The supported transistor output can drive a maximum load of 24V DC at 100mA directly, and by connecting additional relay circuitry, can drive even heavier loads.From the Administration Tools you use ON/OFF buttons in the Layout settings to drive the output high or low.

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Axis Communications 2120 user manual Digital Input, Digital Output