Hi Daniel, yes, all of our instruments record data as STEIM2 miniSEED.
There are several ways to convert. In my opinion the surest one that gives you the most control is to write a script to handle the conversion using obspy—although I think you could do it in Matlab just as well. A simple version of that script might look something like the following:
from obspy import read
st = read('/path/to/data/file')
st.write('/new/data/file', format='MSEED', encoding='STEIM1')
Read more here: https://docs.obspy.org/packages/obspy.io.mseed.html