Hi,
If you take a look to an old Alex-Dokumentation (BC8.1), you will find following information
OPI-1 is used for connecting a braille display, KDN 902 01
For OPI-II you will find only infos about KDN 902 04.
This do not answer your question about KDN 902 02.
I think, but I`m not shure, that KDN 902 02 will also work with OPI-1.
You can only connect this to an old OPI-1 and test it, if it works or not.
best regards,
Norbert