I initially had the tyredog system installed the external type and they are a PITA if you change pressure regularly and do have the security screw thingy installed, also the readings are ok. I also found that in heavier offraod driving (mud bulldust making own track stuff) the large sensors tended to get abused and thus I lost a couple.
Sooo I did a bit of research and ended up with the iawise TPMS2/6
https://mechanicguides.com/best-tire-pressure-systems/ whch is the 6 wheel internal system. So far after a few trips Bendethera, Brindabellas and Darling river run they have performed very well. also have had a tyre change and I told the tyre people that the sensors where there so no issues occurred. (they actually thanked me for letting them know). I have run the 2 sensors wires behind my dash down along the front door sills and they come out near the back of the front seats. signal seems to have no issues and I find they seem to be more accurate.