TST 507 Tire Pressure Monitoring System, 2 Flow Thru Sensors for Metal Valve Stems by Truck System Technologies, TPMS for Caravans, Motorhomes and campervans

You need to read the reviews on the TST 507 TPMS system these do not work without the monitor

I lost them before I had a chance to put them on .

I have the non-flow through sensors, recently the inside dually kept loosing pressure, it was a pain to get the sensor on and off just to put in air. eventually i had to replace the valve stem that was leaking.. i bought two flow through sensors for the inside dually tires. its a good choice,.

Good product

had a different brand for years. This one out does it by a land fall. not at all sorry went to theTST

They work great bought them for the smart car. They programmed into the main unit perfectly. Since we tow now we can watch to make sure all ten tires holding pressure.

We just started using them and they are working great

Work fine.

EZ using new 770 monitor. Worked flawlessly on our toad pulled behind our RV.

Have to check battery caps and make sure they are tight when ever you stop. They are worth every penny to keep from damaging your RV or trailer. Dont leave home without them.