I have so far installed 4 of these controllers to do various jobs.
Each one has solved specific problem(s) very successfully. The build quality is good and the functionality, including ability to link into families and indeed automated control regimes, e.g. sunset/sunrise is well thought out and works well.
I'll never buy another type of clock timer again.
The build quality is very good and now I am happily controlling my immersion boiler using an app and Alexa! Would recommend getting it fitted by a qualified electrician