Most likely they are supported. Read this:
VL808
VL110C
VL103M
Sorry, I forgot to mention, those are all Jimi IoT devices. I see GT06 Is there for Jimi Devices.
Can GT06 Cover these devices too?
Have you checked the link? It should answer your question.
Found 5023 :) Was overlooked. Thank you Anton :)
Does Traccar Support;
VL808
VL110C
VL103M
I Could not see them in supported Device List.