Integrate Smart Radiators

I recently got new electric radiators installed in my apartment. The radiators are made by a company called Technotherm.

They are controllable by an app remotely but I would really like to integrate these into HA and not use the app.

The radiators have a RF unit that connects to a Smartbox connected to the ethernet on my router. They are connected of 868Mhz

I would like to be able to control the Smartbox directly from HA.

The Smartbox itself seems to be used across a number of different companies to control radiators. Another user in the forums has found some code that communicates with the Smartbox but I have no idea how I can make use of this.

Can anyone point me in the right direction to integrate this?

Thanks in advance