Reading data from solar controllers

Hello everyone, I would like to read out the data from my solar controllers and display them compactly in an app. Is there a possibility for this?
Can somebody help me with it ?
Thanks in advance

so how to connect with this solar controller?
by bluetooth? or web/http?
any website for instruction ?

There is already an app from the manufacturer for these controllers. But I would like to merge the data into my own app. Bluetooth.