Had the tyredog TPMS. Couldn't throw the thing far enough.......

The whole unit was sent back, twice, 3 senders "failed" all within 12 months and had batteries that would only last a few days (major drain somewhere in the sensors)
In the begining tyredog were great to deal with, but I think the continual failure of the unit and they wanted the unit returned not replaced, which I wanted saw us part ways.
They are a top idea however, there appears to be some problems. Hella used to sell an aftermarket one and they have since dropped it.
Why I don't know.
When there is a reputable mob selling them, I'll purchase again but until then.......................