Question about Luminea Smart Switch Attachment for Toggle & Push Button, App, Bluetooth

Direct Bluetooth with mobile or with a Zigbee bridge. Bridge bluetooth from "NOUS" in the Galaxus Shop works very well!

Direct is only possible via Bluetooth. I have controlled 2 switches via Luminea Gateway. Works perfectly via the Elesion app.
I can now switch my house battery (16 kWh) on and off even from holidays.
However, the setup is a bit bulky. The instruction manual is virtually useless.
Battery compatible? no idea.