Yes, all Teltonika devices should be supported. This is a quote from page with list of supported devices:
Note that even if your model is missing from the list, there is a very good chance that it's still supported in Traccar.
Good! Thank you Anton for product!
TELTONIKA FMB 125 is not in the list of devices. Question: does traccar tracker TELTONIKA FMB 125 support? Thanks for earlier.