This is the Garmin GCU475. This 3D printable project is designed to replicate the real Garmin GCU475 Keypad for home flight sim users. The design is very open and can be used with X Plane, MSFS2020, FSX, P3D...
The project comes with all the parts in stl format for 3D printing. It also has custom designed pcb Gerber files so that you can order the pcbs from a manufacturing service (the pcbs are also available for purchase in the FSD store).
Find more info as well as download the instructions and Mobiflight files HERE