So we decided to try Zigbee wall switches and many of available brands work with Fibaro. But not all of them and not in all configurations. Even if some switch or module works it may only work with Tuya gateway and application and not with Fibaro gateway. So there are some blanks in this concept. We left with double frame with electronic switch and one blank for shutters as there is no compatible switch or module at this time. So I thought: maybe I just 3D-print it…

OpenSCAD code:

cube(size=[4.9, 4.9, 0.2]);

translate([1.9, 1.9, 0.2]) 
   cylinder(h=0.65, r=0.24 ,$fn=100);
translate([3.0, 1.9, 0.2]) 
   cylinder(h=0.65, r=0.24 ,$fn=100);
   
translate([1.9, 3.0, 0.2]) 
   cylinder(h=0.65, r=0.24 ,$fn=100);
translate([3.0, 3.0, 0.2]) 
   cylinder(h=0.65, r=0.24 ,$fn=100);

Few test desigs:

Let’s print them:

And here we go!

Now it looks just fine.