Ok - finally got it installed and very impressed so far...
For the benefit of anyone searching for details of this smart toilet:
The "washing" functions are as expected (and very effective too ;)) - it's simple to use, and the remote handset allows adjustment of spray temperature; strength...
@cheezyeazy , @shaky1105 - I'm just in the process of installing the Purificare one: will probably be several weeks before I've got it functional, but all seems to be of good quality and at <⅓ the cost of some of the "leading" brands looks to be a great deal.
Will post more later...