How Can to tell the Frequency version of CubeCell Board, Capsule or Module,


I have now several diferent frequency versions of the Cube Cell Range, but I am just seeing if any one know how to tel the difference? I made and erro the otehr day and used one for 433MhZ at 868 MHz and it worked but at reucted RSSI. It would be good to have marking on the boards to indicate version for CubeCell Board, Capsule or Module.
Otehr vendore have a tick box or proper markings on the back.