Review of Flow thru tire pressure monitor by TST

I have the flo through system. The system works great, batteries have lasted thru two summers.(not much more than a year on the calendar.) Have yet to replace them. The flo thru seem to make adding air a little slower but they do work. They are larger, so they extend out a little farther. Don't know how much trouble it is to remove the original sensors to add air, but if others tell you it's easy, I wouldn't spend the extra for the flo thru again. Yes they show both pressure and temp.