Ebyte E49 E49-400TB-01 case

A case for Ebyte E49 series module test board. Two E49 create transparent serial radio link with FSK radio. Similar to E32, but cheaper.
More about module:
http://www.ebyte.com/en/downpdf.aspx?id=924
http://www.ebyte.com/en/downpdf.aspx?id=948

Nuts M3x12.

FreeCAD source attached.

V2 with screw holes on bottom side.

Update:
lower version of V2 with exposed PIN holes.