Nov 15, 2016 - 01:45 PM
According to TST, when 510 sensor batteries do finally die, you can simply return them to TST. For $19.95, they will replace all sensor gaskets, replace the shell, replace the battery, and they will tender to you a reworked sensor ready for 5+ more years of service. Below is there contact info.
TST phone # - 770-889-9102