<strong>Yahoo Message Number: 69096</strong>Since I'm a dealer for Pressure Pro, I have inquired as to their availability of an up graded sensor to allow the user to change the batteries. I have not heard back from them yet and will report when I get an answer. <br/>In the mean time, I'm going to order a set from TST and do a simple comparison of the two systems.<br/><br/>Tom<br/><br/>TSI/Lifeline...