In my previous Becker Navis I had always Active Holder - so I've made no further thoughts when viewing this holder under the accessories for Becker Ready50 LMU and ordered him simply. I would have had better to read the compatibility list in detail, or to study the accessories catalog Becker before!
For Becker Ready50 LMU there is no active support, since these devices do not have contacts on the back (as it in all my previous Becker devices always turn were)!
So - top products for the right devices - hands off, if you (only) a Becker Ready50 LMU has!