RVi Tire Patrol Tire Pressure Sensor 6-pk for Motorhome Mint. TIRE PATROL: TIRE PRESSURE SENSOR 6-PK FOR MOTORHOME. 0.3 ounces per sensor. Within 1.5 PSI. 2-3 years depending on use. We have an inexpensive battery replacement program through the factory. This includes new batteries, updated firmware, and replacement of all O-rings including internal O-rings on the pressure sensor that are not accessible on user-replaceable battery systems. Up to 14 tires on two vehicles at a time.