Pressure Pro VS TST

I also have the TST 507 with flow through sensors. I used them on my 5er for an extended trip out west last summer. On the way home one of the sensors told me I had a low tire. It was correct as there was a long screw in the tire. I also had one stop working while out west. I changed the battery but it still didn't work. I emailed TST, told them the problem and told them I would notify them when I got home. They sent me a new sensor, without charge. I just had to send the defective one back. I have a dually, crew cab, long bed and tow a 35 ft 5er. I don't need a repeater. There aren't any problems with the system in the winter. I found that you don't use chrome valve caps on the system as the two different metals don't like each other and they will fuse together. It's also as slow process to put air in the tires. As for the system still showing the trailer tires after being unhooked and the TV being miles away. Yup I find that also but I haven't a problem with that at all.