Thank you for query.
FM3001 reads data from OBD-II bus line while ALLCAN-300 reads vehicle's CAN bus data.
Most of ALLCAN-300 parameters can be found here: https://wiki.teltonika.lt/view/ALL-CAN300
OBD-II parameters - here:
Please note, that depending on the vehicle model and year of make, not all parameters can be read using OBD-II or CAN lines. If you need wire connection schemes for a specific car model, please contact your sales manager, since we do not post such information here.
Hope this helps,