@Kevin_Z 

Hi,

I have many things connected as I installed a Smart House system : webcam, sensors, a Domotic hub, ... I really don't know what could be triggering these downloads every precise hour.

Is there a way to get advanced statistics from the router, to know which of the devices uses most bandwith ?

I could also stop the devices one by one to check which one would be the culprit...

I took another screenshots this morning, and it is easy to see the bytes received increasing every hour, except around three in the morning :

@Kevin_Z Hard to pinpoint exactly what it is but it does not seem to come from the M9 units. 

Thanks.