switch case / switch case

We use lightings every places we go like home or school, etc.

And each lightings has its own switch on the wall.

Sometimes we misunderstand what switch makes work what lighting,
after all the misfunction usually happen.

So, many people mark on switch with pen.

The Naming Case(or The Switch Mate) is born to alternative these ideas.

This is not only switch case, but also the mark on switch.

Usual places like living room or bathroom already illustrated,
and you can also mark on this your own signs!