WARNING - Make sure your ethernet network has connectivity to the required URLs for the sensor to function.
Once you have confirmation from support that wired-only testing is enabled, you will be able to remove the wireless networks from the sensor.
Go to Settings -> Sensors
Select the Pencil icon to edit the sensor configuration
Delete the wireless network(s)
Select the delete icon next to the Wireless Networks dropdown
Ensure a wired network is set
Select Save
Known limitations:
A sensor with wired-only testing will not appear on the map as the location is estimated based on the observed BSSIDs.
If you are using Aruba Central, a sensor with wired-only testing will not appear in Aruba Central Network Health View since the mapping is based on BSSIDs.