What is the LED under Pedal 3 for?

I apologize if this has been covered before, but I've searched the manual trying to find out what the little LED by Pedal 3 is for. Does anyone know?

Quote from SpinnerDeluxe

Next to the Kemper logo on the remote?

Exactly!

Quote from timo

It is not a LED.

Ok. What is it? It looks very similar to the other status lights, that's why I thought it was a LED.