Data usage when mobile router not in use

[raywright1949]

Does anyone know if a TP-Link mobile router will use data when switched on but not connected to any devices by wifi?    I use a mobile router in my caravan and normally switch it off when I go home, however, I did not do so when I last went home and have noticed that I am using 2.63mb each day.  All other devices are switched off.  Thank you, Ray.  

[MSF]

A quick internet check suggests that it should only use a small amount while it is effectively checking its own connection.

[Chalkychap]

Your router might be checking for firmware updates, or does your TP-Link device poll for time updates from an Internet time server? 

Many broadband routers are configured to do this.

Good luck @raywright1949.