Decal Showing Up on Both Sides of a Plane

[Whimsical_Euphoria3388]

I'm using planes to make 4 sides of an overhead banner for visualization purposes. Problem is, the decal shows up on both sides of the plane and I can't find any setting that lets me just put it on one side. Any ideas of what I'm doing wrong? Thanks.

[Ares Hovhannesyan]

One workaround is to change emission property for plane.

Another one that I find is to use torus with some customised parameters but the object not looks like the same as you have.