If it uses the standard Teltonika protocol then yes.
Yes, it does. However the Decoder needs a lot of work still to recognise the various models and do correct decoding of parameters. I would recommend you list the model of the device as FMC920.
https://github.com/traccar/traccar/blob/master/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java
Hello,
Does Traccar support Teltonika FMC880 ?
Best regards