Alternative to Google Nest Protect: Livy Protect +?

Hi there I always did not like that Nest Protects disable themselves after 10 years.

Today when looking into it I came across Livy Protect + and it looks quite promising at a reasonable price.
How difficult would it be to integrate these into HA? I am not a developer myself.

English translation of the website of this German company

I found this really old discussion here but there is no real answer