Busch-comfortschakelaar flex

Hi, I am trying to study the possibility to install an automatic (motion sensor) switch on my corridor/hall. I get the impression that this product, ComfortSchakelaar Flex, seems to fit the need but my Dutch isn't perfect, google translate isn't helping much, can't find documentation in English and some things aren't exactly clear to me. I was hoping someone here could help me out.

So in my corridor/hall, I currently have a normal switch by the door. I would like to keep the ability to manually turn on and off the light but I would also like to enable the light to turn on and off automatically when someone enters. My house uses Future Linear in Studio Wit colour. I think this product (type 64765-84) would fit. I am unsure is what contact element I should use to 'drive' it. It seems there are several options (64811, 64821, 64814, 64851 and 64891) but I am unsure what exactly are the differences between them. Also some of these seem to require another product, e.g. 64711, but also not entire clear.