You can pair the UE10-3OS2D0 with compact panels, since the footprint leaves room for tidy wiring.
Electrobits Short Sleeve 12mm White (20pcs) for Neon Light Tubing SS2WHT100
You will find that the Littelfuse branding is present, and it makes the part feel legit.
The relay is made by KanSmart, and you will find that it fits well with standard sockets.