When an IQ is functioning without any issues, it produces a green LED that flashes briefly once every five minutes. If this bothers you, the green, flashing LED indication can be disabled: Login to https://app.saltoks.com and click on 'Site' > 'Hardware' > 'IQs' Then:
Click on the 'Actions' button to edit the IQ
Uncheck the box 'Green heartbeat'
Click on the 'Save changes' to save the changes
The 'green heartbeat' will no longer flash once every 5 minutes!