Tire Pressure Monitoring System

Look at Pressure Pro. My system will be 11 years old in August. I had 1 sensor fail in 2011 which was replaced for 1/2 price. I replaced the sensor seals once which was minimal cost. No other issues and I have 10 sensors since I pull a boat behind my 5th wheel.I did replace the sensors last year because I felt it was time because the batteries cannot be changed. However, I was not seeing any warning signs of a weak battery anywhere. I was charged 1/2 the cost of the
original sensors. May seem a little expensive overall but with the good service and minimal problems I am happy with the system and the peace of mind the system provides me.