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

these keep you in constant touch with your tires. could really save the day if something started going wrong while out on the road

I like these better than the banded interior tire models that break.

Good product

Replaced my older style flow thru sensors on my 26 ft travel trailer. Programmed all four sensors without any issues and installed each one at a time. However on my first trip the two sensors on the left side didnt provide any readout on the display inside my pickup truck on a one hour trip. The two sensors on the right side were OK, as well as the four button caps on my truck. Not sure why just the left side wheels on the trailer are displaying information.

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,.

I have the tst system but I needed 2 more pass through valve stem Monitors. They work prefect with my existing system. On time delivery product as advertised

They did their job in the first few weeks of installing them on our tow vehicle. We tow a Nissan behind our RV that picked up a nail in the back passenger tire. We lost ten pounds and were alerted of the problem before we ended up with a blowout while towing. So I highly recommend them if you are towing a vehicle behind your RV. We have pass throughs for the RV itself and love those as well.

I tow an expedition behind my Mountain Aire- they work great! I am within 1# of my digital gage. I didn’t put on security nuts. I remove when I unhook. Then check and air up before we start to tow again. I have a repeater on RV

I installed the Tire Pressure Monitor System By TST - W/6 Sensors, plus the TST Tire Pressure Sensor Tow Car Pack for TST 507 Systems, plus the Repeater For TST Tire Pressure Monitor System - TST507REPEATER. Once installed and operating, this system shows the continuous PSI and Tire Temperature for all six (6) tow vehicle (dually) tires, plus all four trailer tires. TST has newer and more advanced systems than what I purchased. Nevertheless, this system is giving me the continuous tire pressure and temperature for all tires, I used the recommended setting of ten percent (10%) below normal inflation, twenty percent (20%) above normal inflation, and a maximum tire temperature of 158 degrees fahrenheit. Once any of these parameters are exceeded, you will get a screaming loud and visual alarm. You can monitor visually each individual tire as you are driving. The monitor has two different mounts for driver convenience. On a 1 to 5 start rating, I give this system a five star. It works as advertised, and I am absolutely confident that if there is a problem with any of my tires, I will know it BEFORE a tire blows out. The monitor with six sensors was $261.23 on Amazon, the additional four sensors was $170.00 on Amazon, and the Repeater was $50.00 on Amazon - Total $481.23 - peanuts compared to the cost of a blow-out on a travel trailer, the inconvenience, replacement tire and rim, and damage to your rig. If you are towing a travel trailer, you really do need the repeater. PROS: The system works, period, full stop. Programing and installation is fairly simple. Read the directions! Inexpensive compared to other units. CONS: The Monitor with six (6) sensors is an older model. It is roughly 2016 vintage, and when it arrived, all six sensors had dead batteries. I contacted TST directly and they did send me new batteries, and new rubber gasket seals, which need to be replaced after changing the batteries. So, other than the mild inconvenience or having to replace the batteries, there was no additional cost. Installing the repeater required that I install a switch in the line, then directly wire it to my fifth wheel batteries. There are other methods for wiring this repeater, however putting a switch in the positive line makes using this system vary simple. If I could make a recommendation to TST, it would be to sell the Repeater with an on/off switch preinstalled. Here are the links that I used for my purchase. You should look at newer models to decide which is best for your particular needs.

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