Yes, I have been buying the FMM230, which essentially is a FMM130 board inside that casing.
The casing is also sold separately so one can retrofit existing FMM130, if I understood correctly,
Same holds true for all FMx2 devices.
The connector is something proprietary. Cable used to come in 94cm length but I after pleading Teltonika decided to make 300cm cables as well. Those are just not listed on the product website yet.