QNAP Security VioStor NVR (Version: 3.5.1) - Manual (Page 207)

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(7) User-defined Action
Add a self-defined action when an event is triggered. Enter the login account and
password, IP address, port, and the HTTP URL of other surveillance devices to manage
the devices such as fire protection devices, power controller, and air conditioning
control.
Click ‘Select from the list’ to select an action setting which has been configured
before.