This is a mounting plate that fits into the Jung LS 990 system. The fingerprint sensor R502-F (waterproof) can be inserted from behind and fixed with the clamp.
The connection should be positioned downwards.

The whole fits onto the Jung mounting frame and is firmly snapped into place.
The matching frame is of course also required.
It should be printed in the following orientation:

The following parts are required:
R502-F https://de.aliexpress.com/item/1005003058467743.html
LS994B https://www.jung-group.com/en-DE/p/Blank-centre-plate-snap-on-fixing-ivory/LS-994-B
The STL for the R503 is not tested and still under construction!
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There is also a cover with the R502 and the R503 for the Gira TX_44 system.

However, this must be printed with support, as the outer frame is completely in the air.
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The Jung base plate is required for mounting.

The author marked this model as their own original creation.