# Input Signal on Device

Navigation: Working with Nx Witness > Events Rules > Tracked Events > # Input Signal on Device |

Occurs if input signal is detected on one or more device(s). Nx Witness can detect input signals on the following devices:

•ONVIF-compliant (input support via ONVIF may vary from device to device)

•Axis cameras

IMPORTANT: To detect input signals, input must be supported on the device.

Basic Parameters

When – a signal can be continuous, so the event must be defined as occurring when input "Starts" or "Stops".

At – d evice(s) the input signal is detected on. To specify devices see Selection Lists in Event Rules. Choose <Any Device> to detect input signals on all devices supporting that input.

Note: A warning notification will open i f one or more of the selected cameras does not support this event. These cameras will be highlighted in red.

Advanced Parameters

Input ID – the I/O Module port to take signal from (see Setting Up I/O Modules)

Event Scheduling

Why Event may work incorrectly

Too many devices are being monitored, causing too many events to occur.

Devices that are being monitored are offline.

Action is not configured properly.

Global notification for this event is disabled.