Batboard

Does anyone know where the STX secure module is or where it would be located. I have two radios that both can be activated for securenet via RSS and one of the radio had the knob on top for the securenet with the O, Owith/. How can I tell if it is indeed a secure radio or just secure ready.

I noticed Batlabs discussion on 2-way encryption and have taken note of part numbers for module no luck.