The LED indicator on the front panel is used to communicate the state of the cellular and cloud communication status. The LED changes color and mode, each of which indicates a different state. The most common states are:
The device is looking for the internet (Blinking Green).
The device is connected to the cloud (Breathing Cyan/Blue).
For more information on the Device Status LED and what LED colors and blinking patterns mean, please reference the product manuals for the MODULAIR-PM or MODULAIR.